WESTMINSTER AS USUAL?
THREE INTERPRETATIONS FOR THE UK DEMOCRACY
Marco Giuliani
Submitted version.
The published version in Early view is:
Giuliani M (2021). Westminster as Usual? Three Interpretations for the UK Democracy. Government
and
Opposition:
An
International
Journal
of
Comparative
Politics
1–17.
https://doi.org/10.1017/gov.2021.20
Abstract
The Brexit process has shattered the foundations of British politics, with prime ministerial
resignations, government defeats, continuous rebellions and floor crossings. This phenomenon seems
at odds with the usual decisiveness of Westminster systems. However, the aforementioned departures
from the British tradition could be interpreted as compatible with the typical distance of any empirical
reality from theoretical models, as exceptions to the rule due to the specificity of the European issue,
or as the surfacing of some deeper social, economic and cultural tensions. Data alone are insufficient
to confirm any of the alternative interpretations, although they seem to confirm the existence of longterm dynamics more than some short-term exceptionalism. Within this scenario, the article suggests
that a series of institutional innovations introduced since the late 1990s have facilitated the political
consolidation of those tensions, contributed to the partisan dealignment, and made room for a
potential departure from a Westminster model of democracy.
Keywords
Brexit; Cabinet; Westminster; Model of democracy
Marco Giuliani
Department of Social and Political Science, Università degli studi di Milano, Via Conservatorio 7,
20122 Milano (Italy)
[email protected]
1. Introduction
Arend Lijphart took the label for his majoritarian model of democracy from the British Houses of
Parliament, and yet he recognized that the United Kingdom is not the purest type of Westminster
system (Lijphart 2012). At the core of this vision of democracy (Powell 2000) lies what Walter
Bagehot called, more than a century earlier, the ‘efficient secret’ of the English Constitution, which
‘may be described as the close union, the nearly complete fusion of the executive and legislative
powers’ (Bagehot 1867: 11). This type of institutional architecture, coupled with the typical features
of party governments, usually assures swift decisions and a decisive political system (Strøm 2006).
Yet the parliamentary Brexit process revealed a completely different representation of British
politics. Two unexpected early general elections were held, but only after having been agreed on the
basis of some bipartisan consensus: in 2017 as the direct consequence of the Fixed-Term Parliaments
Act, and in 2019 due to the opposition’s partial support for and tactical abstention from Johnson’s
Early Parliamentary General Election Act. Two prime ministers resigned for failing to deliver what
they had promised. Numerous ministers quit office, and many MPs rebelled, if not crossed the floor,
protesting against the cabinet policies. Successive Conservative minority governments suffered from
several parliamentary defeats, in spite of the confidence-and-supply support of the Democratic
Unionist Party. A number of senior MPs and former cabinet members had the whip removed, and the
executive lost control of the parliamentary agenda on several occasions.
There could be three different interpretations of these events. The first one argues that they are
within the likely margin of variation of any empirical case compared to a theoretical model such as
that of a Westminster democracy. Indeed, Lijphart himself uses the image of a ‘Kuhnian paradigm’
when talking about democracies governed by majority rule, where ‘discrepancies between facts and
theories are not sufficient to lead to its abandonment’ (2008: 120). The second interpretation reads
those anomalies as the by-products of the uniqueness of the Brexit process or, more extensively, of
the specificity of the European issue. As such, they represent the typical exception that proves the
rule. The solution to the Brexit conundrum, together with the restoration of a clear parliamentary
majority under the second Johnson cabinet, have restored the usual Westminster dynamics of British
politics, which were only suspended and not really altered. The last interpretation argues that Brexit
has been a critical juncture that has brought to the surface more long-lasting transformations of the
British political system. As such, in spite of the apparently extraordinary dynamics recently
experienced, what happened was just the tip of a deeper iceberg, whose manifestation does not need
to be always as radical as during the years 2018 and 2019, but at the same time will have enduring
consequences for the nature itself of the Westminster model of democracy in the UK. Delivering
Brexit may momentarily curb those dynamics, but they are bound to re-emerge in new ways on some
other occasions.
In the absence of any abrupt reform, as in the case of New Zealand in 1996, where a new
electoral law had deep consequences for the democratic fabric of the political system, it is not easy
to investigate the stability or the transformation of a model of democracy. As such, models should be
resilient to changes, but slow-moving transformations could still affect their nature in the long term.
For this reason, in the short and medium term, data can only support the plausibility of different
interpretations, but not definitely confirm or reject hypotheses regarding the adherence of a political
system to a specific archetype.
After identifying some significant behavioural departures from the usual operation of a
Westminster democracy, we will connect them to a series of institutional variations that date back to
the late 1990s, bolstering a slow but continuous change of British politics made more evident by the
peculiarities of the Brexit process.
2. An empirical overview
The first breach of a core principle of a Westminster style democracy was the 2010 CameronClegg coalition government, which not by chance was announced by its prime minister during the
first press conference as:
a new politics, where the national interest is more important than the party interest,
where cooperation wins out over confrontation, where compromise, where give and
take, where reasonable, civilised, grown-up behaviour is not a sign of weakness,
but a sign of strength.
After 2015, and in spite of all forecasts of a hung parliament, the situation apparently returned
to normal, but it deteriorated again in 2017 after the snap election called by Theresa May. For the
first months, a confidence and supply agreement with the DUP seemed to resolve several issues, but
it proved to be part of the problem when the Irish backstop became the most vulnerable passage of
the Brexit agreement. In her resignation statement in front of 10 Downing Street, May advised her
successor that:
to succeed, he or she will have to find consensus in parliament where I have not.
Such a consensus can only be reached if those on all sides of the debate are willing
to compromise. […] At another time of political controversy, a few years before his
death, [Sir Nicholas Winton] took me to one side at a local event and gave me a
piece of advice. He said: ‘Never forget that compromise is not a dirty word. Life
depends on compromise.’ He was right.
The words in italics signal the similarity of content between the two speeches, as well as the
distance from the traditional adversarial style of British politics. May’s successor, Boris Johnson,
certainly did not take that advice, until he also lost his working majority, after a series of floorcrossings and whip removals (see infra). Everyone knows how the dispute eventually ended, with the
prime minister being able to cut the gordian knot, although not after being prevented from doing so
several times by a parliament whose powers had been bolstered by the Fixed-term Parliaments Act
2011.1
The coalition government and the external support could be anomalies in a linear story of one
of the prototypes of majoritarian democracy, and the words of the former prime ministers could be
just rhetorical exercises by political leaders trying to cope with the exceptionality of the period. It is
difficult to judge from those few empirical items, in spite of their being close to the core of the polar
model itself. To complement those observations, we propose to enlarge the focus to comprise four
relevant behavioural dimensions relating respectively to: 1) party rebellions; 2) government
parliamentary defeats; 3) ministerial resignations; 4) MPs crossing the floor. More in detail, in Table
1 we monitor the evolution of these dimensions for each legislature since 1979, in order to have forty
years of observations approximately centred around 1997 as a potential institutional turning point.2
The closer these indices are to zero, the more the empirical reality approximates the polar type of
Westminster model.
1
This act by itself is another institutional element that contradicts the concentration of power typical of a Westminster
democracy, preventing the prime minister from dissolving the parliament at his/her own will (Norton 2016; Schleiter and
Evans 2021). The Conservative party promised in its 2019 electoral manifesto to ‘get rid of the Fixed Term Parliaments
Act, (since) it has led to paralysis at a time the country needed decisive action’. Decisiveness is in fact the essence of a
Westminster democracy, and the draft prepared by Johnson’s cabinet in December 2020, besides reviving the prime
minister’s prerogative powers relating to the dissolution of Parliament, also protects them against the judicial review of
the Supreme Court, as happened with the 2019 parliament’s prorogation.
2
Data on rebellions refer exclusively to government parties, and have been computed on the basis of data gathered by
‘The public whip’ project and following its methodology (https://www.publicwhip.org.uk/), complementing those
reported by Cowley and Norton (1999) for the years before 1997. Government defeats have been computed from the same
source, crosschecked for the first legislatures with data included in the project http://www.election.demon.co.uk/ and in
Wikipedia, as well as from the Parliament itself https://www.parliament.uk/about/faqs/house-of-lords-faqs/lordsgovtdefeats/. Resignations have been counted from the ‘Whitehall report’ of the Institute for Government, and include
only those due to political disagreement (https://www.instituteforgovernment.org.uk/publications/whitehall-monitor2020). Floor crossings have been computed from the Research Briefing n. 2357 of the Library of the House of Commons.
The index refers only to majority MPs, and excludes multiple crossings during the same legislature or cases in which the
whip has been restored after its suspension.
Table 1 Behavioral indices of a Westminster democracy
Legislature
Cabinets
1979-1983
1983-1987
1987-1992
1992-1997
1997-2001
2001-2005
2005-2010
2010-2015
2015-2017
2017-2019
Thatcher 1
Thatcher 2
Thatcher 3 – Major 1
Major 2
Blair 1
Blair 2
Blair 3 - Brown
Cameron 1
Cameron 2 - May 1
May 2 - Johnson 1
Source: See endnote 2
Duration
(days)
1497
1463
1764
1849
1497
1429
1831
1823
765
915
Divisions
with rebels
(%)
12
16
12
13
15
30
37
47
25
34
Government defeats
House of Commons
(per 1000 days)
0.7
1.4
0.6
3.2
6.0
7.7
8.7
34.6
11.8
55.7
Government defeats
House of Lords
(per 1000 days)
30.1
42.4
23.8
33.5
72.1
171.4
95.6
54.9
124.2
75.4
Government
resignations
(per 1000 days)
0.7
1.4
1.1
1.6
1.3
2.8
3.8
1.1
1.3
29.5
Floor crossings
(per 1000 days)
0.7
0.0
0.6
2.2
1.3
2.1
4.9
2.7
0.0
19.7
We begin with rebellions, probably the most fine-grained measure of the lack of grip of the
executive on the legislative branch. The Brexit process has seen a series of rebellions by majority
MPs, including various members of the executive, and it has produced the largest government defeat
in modern British political history. Hence it can be easily portrayed as a perfect storm for a
parliamentary democracy (Russell 2021). Yet the record amount of backbench dissent in the House
of Commons was not during the last legislature, and did not concern the European Union, but rather
a government motion over Iraq during the second cabinet led by Tony Blair.
If we observe the fourth column in Table 1, we note that the late 1990s represent a sort of
watershed between two decades of relatively few rebellions, and another two decades of much more
frequent revolts.3 In the latter legislatures, the share of divisions with at least one rebel is twice or
even three times higher than in the preceding period. Furthermore, while the coalition government
was understandably more exposed to rebellions than single-party ones, the relative length of the
honeymoon period in shorter legislatures, and the higher perceived costs of rebellion in the case of
minority governments did not reduce the amount of backbench dissent as the theory would expect. 4
Controlling for the above factors, we recognize a regular increase of rebellions for the whole 19972019 period, with a progression that is confirmed also if we include in the analysis the revolts of
opposition MPs, so that the increase cannot be attributed to any specific party characteristics.
In Table 2 we investigate in more detail the hypothesis of a gradual but systematic slackening
of the grip of the different cabinets on their backbenchers over time, focussing on the years after 1997.
The various regression models include in the right-hand side of the equation a time variable, the year
of the division, together with a series of dummy control variables. The first one accounts for free
votes, in order not to conflate the real degree of dissent by including divisions in which there was no
form of explicit or implicit whip. The second one reflects our observation regarding the coalition
government of the 2010-15 legislature, naturally exposed to greater defections. Finally, we include a
dummy variable for divisions that deal with EU issues, clearly the topic that elicited many dissenting
voices in the Parliament over the years.5
3
Extending the analysis to the whole post-WW2 period (Cowley and Norton 1999), we can estimate that the average
share of contested divisions within the majority in the legislatures before the 1970s was slightly less than 6%; it grew to
around 15% in those between 1970 and 1997, and topped almost 32% afterwards.
4
Focusing on the last legislature, resignations from Theresa May’s second cabinet were higher than from Boris Johnson’s
second cabinet, as was higher the rate of divisions with government rebels (also due to the fact that the 21 MPs expelled
from the Conservative parliamentary party in early September 2019 can no longer be counted as such). However, the
frequency of floor-crossings and government defeats was higher under Johnson than under May.
5
We looked conservatively for the presence of the words ‘EU’ or ‘Europe*’ in the title of the division.
Table 2 Regressing dissent on time (OLS coefficients and logit odds ratio with standard errors)
Free vote
EU
Coalition
Year
Constant
N
(1)
Number Rebels
OLS
(2)
Dummy Rebels
Logit OR
(3)
Dummy defeat
Logit OR
38.20***
(1.13)
2.72***
(0.63)
1.50***
(0.47)
0.07**
(0.03)
-129.25**
(62.97)
47.56***
(16.49)
1.67***
(0.16)
2.12***
(0.16)
1.04***
(0.01)
0.00***
(0.00)
11.13***
(3.33)
2.36***
(0.49)
1.90***
(0.32)
1.14***
(0.02)
0.00***
(0.00)
5976
5976
5976
Standard errors in parentheses; *** p<0.01, ** p<0.05, * p<0.1
The first model aims at explaining the number of government rebels. The impact of time is
positive and systematic, confirming our intuition of a positive trend of rebellions. At first sight, the
magnitude of that effect seems negligible, but it should be borne in mind that we are talking of
averages taken on literally hundreds of divisions in which the Westminster baseline should be to have
no rebels at all. All our control variables are highly significant: free votes do not respect the standard
government/opposition divide; divisions under the coalition government have on average one and a
half more rebels; and the EU is a major factor triggering dissent within the governing parties.6
The second model, accounting for the presence of at least one dissenting MP within the
majority, confirms and contributes to the robustness of the previous findings. Each year there is a 4%
greater probability of having rebellious behaviour in the House of Commons within the governing
parties. All other things being equal, the probability more than doubled during the 2010-15 legislature,
and if the division tackled EU issues there was an additional 2/3 probability of having at least one
MP rebelling.
To rebel in a division against the party directives is a personal choice, whose political
consequences vary according to whether or not it contributes to a parliamentary defeat. Thus, a more
severe symptom of divergence from the traditional Westminster democracy is the frequency of
government defeats in the House of Commons, whose values are reported in column five of Table 1
6
To check for the disproportional impact of specific events, we also replicated our models cancelling, one after the other,
all the divisions of a specific year, confirming the robustness of our findings. We obtained similar results by substituting
the exact date of the division for the year variable.
disaggregated for the different legislatures. The index probably overestimates the importance of those
losses for the period of the coalition government, since we counted as a government defeat every time
(the majority of MPs of) either the Conservatives or the Liberal-Democrats happened to be on the
losing side of the division. If we considered as defeat in that period only when both parties happened
to be in a minority, largely underestimating its political meaning, the index would decrease to a value
close to that of the second Major cabinet, still being much higher than in the first three legislatures.
In both cases, we can still recognize the steady increase of the frequency of government
setbacks since the early 1990s, and especially after 1997. Compared to less than 1 defeat every 1000
thousand days in the first three legislatures, the weak second Major cabinet had three times more
setbacks. Yet after the Labour landslide victory of 1997 the frequency of defeats doubled again, and
continued to progress until 2019 irrespective of the government formula. The third model in Table 2
confirms this impression: after 1997, each year saw a 14% increase in the probability of witnessing a
government defeat, which was further boosted in the case of divisions dealing with EU issues, when
the probability of losing the parliamentary vote was more than twice than usual.7
Defeats in the House of Lords, in the sixth column of Table 1, do not have the same political
significance. Yet they are worth exploring especially considering that no party controlled the majority
of the members of that House. Apart from the second Blair cabinet, which is clearly an outlier, we
observe a trend that parallels the one in the House of Commons, with a frequency of defeats in the
last legislatures that is two or three times higher than that of the first period taken into consideration.
Another measure reported in Table 1 is the frequency of cabinet resignations due to policy
disagreement, a further indicator of the fact that the hierarchical structure of the British cabinet is no
longer able to produce collegial decisions and control its internal conflicts. Here the values seem more
stable, with the important exception of the 2017-19 legislature, which saw an exceptionally high
number of resignations, mostly due to dissent with the government’s approach to the Brexit issue on
both sides of the dispute. Yet, once again, if we discount for the possible ‘honeymoon’ of the two
executives in the shorter 2015-17 legislature, and for the delicate equilibrium of the coalition
government, we realize that since the 1990s there has been a slow but consistent increase in the
frequency of government defections.
7
We are not claiming that the trend needs to progress always at the same pace, or that there cannot be a decrease in that
frequency, but only that the new ‘baseline’ is higher than in the past. Despite the honeymoon period and the Covid
emergency, the second Johnson cabinet has already been defeated twice in approximately six months, a value which is
similar to that of the 2015-2017 legislature.
A similar trend is apparent also for the last index reported in Table 1, probably the strongest
manifestation of misalignment between an MP and his/her own party, i.e. the autonomous decision
to change parliamentary group and/or the party’s decision to definitively remove the whip from one
of its members. Abandoning the governing party for political reasons was almost an unknown
phenomenon under Thatcher’s cabinets. It became relatively more common in the 1990s, and the
frequency further increased between 2005 and 2015. After that date there was the twofold anomaly
of the short 2015-2017 legislatures, with no floor-crossings, and of the 2017-2019 legislature, with
many Tories abandoning or being expelled from their parliamentary party and increasing the number
of independent MPs, or joining the Liberal-Democrats or, momentarily, the new Change UK
parliamentary group. If we clustered the four legislatures before 1997, on the one hand, and the six
legislatures after that date on the other, the average frequency of floor-crossings in the first period
would be just below 1 in every thousand days during the first period, and more than four times higher
in the second one.
Floor-crossings are always the result of the deterioration of relations between an MP and his/her
political leader, often because of policy or political divergencies. Usually, the strict selection of the
political élites under a party government prevents the emergence of harsh frictions. Their
development is per se a symptom that the parties are failing to funnel the divergent opinions, and that
a different, more cooperative approach may be required. A clear example is provided by the null
result of the series of indicative votes taken in the House of Commons after Theresa May failed to
have her EU agreement approved in parliament. On the one hand, the fact that a cabinet was unable
to gain approval for the most important act of its mandate was a sign of the limitations of a
majoritarian approach to the issue. However, on the other hand, that same adversarial style prevented
the quest for alternative solutions.
In this regard, it is worth recalling the words used by Nick Boles, a Conservative MP, when he
announced to the House that he was resigning from his parliamentary group at the end of the
inconclusive second round of indicative votes:
I have given everything to an attempt to find a compromise that can take this country
out of the European Union while maintaining our economic strength and our
political cohesion. I accept that I have failed. I have failed chiefly because my party
refuses to compromise. I regret, therefore, to announce that I can no longer sit for
this party. (HC Deb 1 April 2019, vol. 657, col. 880)
To summarize, there are a series of signals that the British Westminster democracy, and
especially its central institution, the cabinet, have not worked as they used to do. Coalition and
minority cabinets are the most evident symptoms of that syndrome, but we have proposed also a series
of subtler indices to evidence an ongoing dynamic that we propose to date back to the second half of
the 1990s. In this respect, the last 2017-19 legislature could be an odd outlier, more or less as the mid1970s stand apart from the rest of the post WW2 British history. Or it could have been the outcome
of the underlying frictions that had accumulated in the past 20 years, which suddenly exploded in the
Brexit ‘perfect storm’, as in the earthquake metaphor used by policy scholars of the punctuated
equilibrium school (Baumgartner et al. 2014). Data are in theory compatible with different
interpretations, so that understanding what the exception is, and what the rule is, requires further
widening the focus of the analysis.
3. The Westminster benchmark
From a constitutionalist point of view, what represents the essence of Westminster systems is
debatable and contested. ‘There is no single essentialist definition on which in the present context we
can all agree. It is probably futile to try’ (Rhodes et al. 2009: 9). In terms of conceptualization, this
means that scholars not agreeing on a set of properties defining the connotation of the concept along
the ladder of abstraction resort to non-classical understandings, such as radial or family-resemblance
categories (Collier and Mahon 1993). While this strategy can accommodate the parallel investigation
of different country experiences, it can hardly help in the longitudinal analysis of a single political
system. Conversely, Russell and Serban (2020), who prefer to follow the classical inverse relationship
between intension and extension of social science concepts, ends up with a radical proposal. Worried
by the conceptual stretching in the use of the term ‘Westminster model’, they go so far as to suggest
its retirement.
In contrast to the two perspectives outlined above, we prefer to consider a pure Westminster
democracy as one of the two opposites of a polar types approach: countries are closer to, or farther
away from, two empirical (not ideal) extreme types according to a set of independent variables, so
that it is possible to quantify them into indices before clustering and averaging them into specific
dimensions and scales (Lijphart 2012). Thus, in opposition to consensual systems, Westminster
democracies can be seen as characterized by an adversarial two-party system, competing on a singledimensional space, tightly governed from its centre by a collegial executive monopolistically
controlling the legislative agenda by means of a hierarchic cabinet firmly led by a prime minister, and
relying on disciplined parliamentary parties.
Philip Norton (2019) dates back to the 1970s a major departure from this tradition which
involved behavioural, structural and constitutional changes that impacted on the executive/legislative
relationship and on the link between the Parliament and the people. Yet there may be three different
interpretations of those transformations: a) they are within the range of the possible variability of a
Westminster democracy; b) they are the outcome of the exceptionality of the European, and especially
Brexit, issue; c) they are symptoms of some deeper change of the British model of democracy. The
differences amongst those alternative understandings can be both theoretical and empirical, and we
cannot clarify all of their different nuances in this article. We will only consider a few arguments or
reference points for the first two interpretations, before spending some more time on the third one.
As said above, and apart from those who see no utility in the term as such, there is an ongoing
debate on the exact meaning, and thus on the empirical extension, of the concept of Westminster
democracy. At one extreme of that debate, Rhodes et al. (2009) argue in favour of a flexible bottomup definition of the concept that accommodates a variable set of ideas, beliefs and practices which
the political actors operating in those contexts recognize. A Westminster democracy is what those
actors make of it, since ‘it may mean different things to actors in different countries’ (229). However,
if the concept eventually coincides with a ‘loose family of governments’ (229), it becomes impossible
to evaluate any empirical trajectory of the countries identifying themselves in that model. If a
Westminster country changes, the model adapts itself to those changes.
This perspective is certainly a good antidote against the myth of a golden age of Westminster
democracies, but at the same time it underestimates the possibility that countries can depart from their
usual path, since any diversion should be considered a reinterpretation of that ‘living tradition’ (45).
On adopting this perspective, it is natural not to consider the changes described in the preceding
section as resulting from changes in the model of democracy. In its history, the UK has experienced
other times in which the familiar majoritarian dynamics have been momentarily suspended, but the
model itself has proved to be much more resilient. At the end of the day, can the democracy that lives
in Westminster not be a Westminster democracy?
The second interpretation does not underestimate the institutional and behavioural changes
reported in the preceding section, but confines them to the exceptionality of the Brexit process, or, at
worst, of the European issue. The sensitivity of the British political system to the EU dates back to,
the accession of the UK to the then European Communities in 1973. The first national referendum
confirming the membership in 1975, the internal dissent on the European Exchange Mechanism that
contributed to the end of Thatcher’s third ministry in 1990, the rebellion on ratification of the
Maastricht Treaty under John Major’s cabinet in 1992, the success of Eurosceptic parties since 2004,
are just a few reminders of how Europe has never really fitted with the political history of its
‘awkward partner’ (George 1998). The Brexit referendum, the resignations of David Cameron and
Theresa May, the two early elections, the exceptional rate of parliamentary revolts, government
defeats and floor-crossings of the last legislatures have the same denominator: the European Union.
According to this reading, which often attributes the misfit to identity issues (Carl et al. 2018), by
ending the EU affair (Prosser 2021) the approval of the exit agreement and the 2019 general election
have also ended the period of anomaly and realigned British politics (Cutts et al. 2020).
4. A third perspective
While the first interpretation depends on its theoretical perspective, the second one is mostly an
empirical issue, whose plausibility has been strongly reinforced by Johnson’s victory. However, there
is a third possibility. It suggests that the Brexit conundrum is not at the origin of the UK
transformations; rather, it is one of its effects. There was more than just the pace of European
integration behind the Brexit vote; likewise, there is more than just the EU behind those changes. The
focus of the analysis needs to be both enlarged, to include institutional and societal transformation,
and deepened, to admit long-lasting effects than cannot appear and disappear with some bold decision
like delivering Brexit. In order to advocate in favour of this third perspective, we will first reconstruct
the scholarly debate centred on the most important dynamics in British politics of the last few years,
and then link it to a number of institutional transformations that could consolidate those changes in
the longer term, regardless of the apparent setbacks of late 2019.
Strohmeier (2018), explicitly adopts Lijphart’s perspective in sketching a ‘consensualisation’
of the British Westminster model. However, on updating his traditional variables, he also argues that
that process could have been stopped already with the 2015 general election. Baldini et al. (2018,
2021) glimpse a recent reinforcement of the majoritarian character of the British political system
following the 2016 Brexit referendum, though they do not exclude other adjustments in the future.8
Other scholars instead believe that the executive remains exposed to countervailing domestic powers
different from the EU, such as the devolved governments, the courts, or parliament itself (Sumption
2020; Young 2017).
Taking a bottom-up approach, Carreras et al. (2019) identify the main political changes not at
the constitutional level, but at the societal one, and especially in the failure to represent the
differentiated effects produced by globalization in the country. The transformations triggered by
Brexit are the manifestation of a multifaceted crisis, ‘a symptom of longer-term social changes that
They admit that the ‘move back towards the Westminster model is clearly constrained’: ‘high volatility leaves the twoparty system in a vulnerable position’; ‘Parliament is now structurally better equipped to challenge the government’; and
‘so far, Brexit has not cancelled the important constitutional reforms adopted since 1997’, including devolution and the
role of the Supreme Court.
8
have quietly been reshaping public opinion, political behaviour, and party competition in Britain’
(Ford and Goodwin 2017: 17). Evans and Menon (2017) take the same longitudinal approach, and
identify substantially similar drivers of change – consisting of economic crises, identity issues and
migration problems, with Europe acting as the catalyst of those tensions – but they also focus on the
supply side, i.e. on the inability of political élites to tackle the fears produced by those societal
transformations. The ideological convergence of the major parties, the centripetal competition to
represent the middle class, the technocratic turn in many policy decisions, are all factors that have
produced political dissatisfaction, disillusionment and depoliticization in growing portions of the
electorate, particularly in ‘the working class, the poor and the less educated, on both left and right’
(34). This partisan dealignment has favoured unprecedented level of electoral volatility and,
eventually, reduced the predictability of electoral results. The public perception of the major parties
has been influenced by a series of electoral shocks – ranging from migration to economic recession,
from the coalition government to the two referenda – that are thought to have long-lasting
consequences because younger cohorts with weak partisan attachment are going to substitute older
identified groups (Fieldhouse et al. 2019). As Sobolewska and Ford (2020) put it, ‘the changes which
drove Brexit will continue to generate volatility and political change for many years to come’ (2).
This evolution has eroded the social bases of the Westminster model, weakening the traditional
unidimensional left-right competition, the one that ensures the coherence of an adversarial style of
politics, and introducing new social divides.9 Majoritarian institutional set-ups are typically extremely
resilient to these bottom-up pressures, and in the United Kingdom they have usually been efficient in
protecting the so-called British Political Tradition. Hall et al. (2018) argue that the recent challenges
to British democracy have led more ‘to adaptation and accommodation, rather than wholesale change’
(378). However, they do not rule out that, in the absence of any ‘simple solution, (…) challenges to
established political practice in the UK are only likely to intensify further, in both resonance and
scope’. Lacking an institutional anchorage – that is, without what has been called in political
sociology a ‘favourable structure of political opportunities’ (Tarrow 1988) – social changes cannot
directly transform a model of democracy. These opportunities depend, among other things, on the
degree of openness of the political system.
In this regard, a Westminster democracy usually filters the representation of societal differences
by means of a highly disproportional electoral system. The typical underrepresentation of third parties
9
Jennings and Lodge (2018) argue that, whereas these social challenges may be not unique to the United Kingdom, the
way in which they interacted with the pre-existing institutions posed specific problems to British politics.
is an effective barrier to the entry of less traditional, locally-based, or single-issue preferences, as well
as demands that are not aligned along the usual left-right dimension. The major parties have no
interest in making the system more inclusive; rather, they accommodate under their umbrellas
potentially diverse interests. In turn, in this closed system, citizens have no incentive to vote sincerely
for some minor party, and act strategically by voting for a less-preferred candidate who has greater
chances of accessing the institutions. According to the well-known Durverger’s law, the combined
mechanical and psychological effects of the plurality electoral formula on both citizens and parties
favour the formation and maintenance of the two-party system at the basis of Westminster
democracies.
Since the late 1990s there have been two main factors that have indirectly changed this state of
affairs: first, the establishment of devolved parliaments in Scotland and Wales, together with the
Northern Ireland Assembly; second, the first election for the European Parliament in the United
Kingdom using a PR formula. Both types of election, local and supranational, adopt more permissive
electoral systems, thus favouring the emergence and success of parties usually marginalised in general
elections. The effective threshold in these systems, an estimate of the share of votes required to have
a reasonable expectation to gain a seat at the district level, is between 2 to 4 times smaller than under
the first-past-the-post system used in general elections. The level of disproportionality has thus been
much lower in the PR election for the European Parliament, in the Additional Member System for
the Scottish and Welsh parliament, and in the Single Transferable Vote used in the Northern Ireland
Assembly, compared to the plurality used for the House of Commons. Since the late 1990s, the
average Gallagher index has been respectively 7.5 for the European Parliament, 7 in Scotland, 10.5
in Wales, and 3.8 in Northern Ireland, compared to 14.6 for the Parliament in London.
The existence of a series of significant second-order elections favouring a clearly different
pattern of representation has an important consequence for the first-order one. Parties and preferences
usually underrepresented in Westminster, squeezed by the disproportionality of its two-party
competition, have for the first time had their own institutional venues, and have been able to
consolidate their territorial bases without being viewed as symbolic waste votes. Nationalist, green,
and single-issue parties have boosted their credibility through the success gained in these alternative
venues. This has not translated automatically into their greater competitiveness on the national
political stage, with the notable exception of the Scottish National Party, but into the necessity for all
major candidates to pay attention to those diverse instances. Over time, this situation has produced,
firstly, a more open race at the district level, secondly, a larger volatility of the electorate, and
eventually greater uncertainty about the aggregate result.
If we use the series of the electoral results from 1945 to 2017, and regress the sum of the share
of the votes for the first two parties in each district on the year of the election, we obtain a significant
negative coefficient for the time variable, i.e. a systematic decrease in support for the two frontrunners. The same happens if we consider the electoral margin between the first and third party, or
the probability of winning a seat with the absolute majority of votes, both of which are signs of the
increasing competitiveness of the election at the district level, and thus of the overall uncertainty of
the result at the aggregate one. These average trends suggest that the two-party dynamics of the 2017
and 2019 election could be a parenthesis, more than a return to the standard tradition.10
These changes also impacted on other traditional electoral and party-fragmentation indices.
Compared to the average value of Thatcher’s and Major’s legislatures, the effective number of
electoral parties increased after 1997 by approximately 10%, while the same index for parliamentary
parties increased by 15%. Average aggregated volatility increased by more than 40% between the
two periods. Also what Blau (2008) calls the effective number of legislative and governmental parties
saw an upturn, mostly due to the minority (and eventually insufficiently supported) cabinets after
2017, and the coalition government during the 2010-15 legislature.
In democracies, elections represent the major entry points for institutional changes, mostly
because their outcomes generate a series of potentially profound changes. As Sartori (1994: 3) put it
in his book on constitutional set-ups, ‘in the beginning is how a people is made to vote’. The greater
competitivity and volatility that spilled over from second- to first-order elections produced greater
opportunities for realignments between public opinion and political élites, and eventually further
divisions amongst and within them (Cutts et al. 2020; Gamble 2019). These are two factors further
considered by Tarrow (2011) as opportunity structures for introducing societal changes in the
institutional fabric of a political system.
The realignment is evidenced by the major restructuring in the geography of the vote in the last
elections, due to the fact that traditional social classes divides were less able to predict voting
behaviours. The ruptures between and within the political élites were particularly evident in the last
two years before the 2019 general election, and again reflected significant socio-economic divides.
Heath and Goodwin (2017: 357) discuss this possibility, concluding that ‘the move towards two-party politics may also
turn out to be a blip rather than a permanent realignment, and there is still the potential for minor parties to reassert
themselves’ (357). Interestingly, they add: ‘One thing, however, appears fairly certain. While the 2017 general election
result defied predictions and also easy explanations, the next election—whenever it is called—will also have the capacity
to surprise’. John Curtice (2020: 45), while acknowledging the fact that the 2019 election delivered a clear majority, raises
a few doubts that this result actually signals a stable return to a Westminster normalcy, remaining ‘a high probability that
future elections will result in more hung parliaments’.
10
The Irish backstop, and what it represented, nurtured a geographical divide within the government
working majority with the Democratic Unionist Party, whereas the position of the Scottish National
Party sometimes prevented the opposition from finding a compromise on some parliamentary solution
alternative to Brexit. Rebelling or not for Conservative MPs was not just a personal decision, but
systematically reflected the preferences expressed by each MP’s constituency during the Brexit
referendum, and some deeper socio-economic structure of the electorate (AA 2019). The same applies
also to Labour MPs rebelling in support of May’s or Johnson’s exit agreements.
5. Back to business as usual?
Our thesis is that the problems experienced during the Brexit parliamentary process should not be
considered short-term anomalies or entirely dependent on the EU divide; rather, they should be
framed within a broader and longer-term interpretation. The dealignment between large segments of
the electorate and the political élites has social, economic and cultural origins, but it would have been
reabsorbed if they had not been anchored in an institutional opportunity structure that started to
change already in the late 1990s.
The main objection to this interpretation is that, although there have been some evident oddities,
they mostly depended on the imperfect majorities of the past decade, connected to a period of complex
choices. Whatever happened in those years, the end of the Brexit process will also restore the
traditional Westminster dynamics. Clear signs of this restoration have already come from the 2019
general election, the landslide victory of the Conservative party and the consequent second Johnson
ministry leading a single-party cabinet enjoying a wide and more disciplined majority in parliament.
In short, there have certainly been exceptions, but, as the saying goes, they only prove the rule.
We are not convinced by this argument for two different sets of reasons. On the one hand, we
should believe that those imperfect contentious majorities and hung parliaments were just quirks of
fate, and not the outcomes of longer societal processes described by a large number of scholars and
concisely summarized in the previous section. We believe that they were the effect of something
bigger, and not just some random occurrence. On the other hand, single events never prove or
disconfirm a claim regarding the long-term evolution of a democracy. While the last two (if not three)
elections seem rather exceptional, at least for having been dominated by the single issue of Brexit,
the institutional argument that we have presented identifies the constant underground forces that we
believe started to affect the foundations of British politics.
Devolution has fostered the establishment of parallel and diverse political systems that threaten
the unitary character of the country, and that require a more cooperative approach in order to avoid
otherwise potentially disrupting centrifugal tendencies. Referendums, i.e. a direct form of democracy
more akin to a consensual rather than majoritarian model, have been used since 1997 not just for
deciding on EU membership, but for several UK-wide or subnational constitutionally important
issues. The House of Lords has been able to extend its influence as soon as the House of Commons
was no longer under the direct control of the executive (Smith 2019). Even the supreme court affirmed
its power vis-à-vis the executive prerogatives when different cabinets tried to extend them without
having the usual loyal partisan support, as happened first with Theresa May and the necessity of a
parliament act for invoking art. 50, and then with the prorogation controversy under the first Johnson
cabinet (Eleftheriadis 2017; Sumption 2020).
These are not just behavioural dynamics depending on the contingent government majority.
They are also alternative authoritative institutions at odds with the fusion of powers recalled by
Bagehot’s efficient secret. To use a popular saying, once the genie of consensualism has been freed,
it is difficult to put it back into its bottle. Europe has been a traditional confrontational issue in British
politics, and yet it should not be mistaken as a peculiar element at odds with its tradition. The EU
divide has been the most visible representation of the institutional tensions connected to the process
of globalization, and of the imperfect political attempts to exploit its economic opportunities, on the
one hand, while taming its consequences on the other. This is the reason why the Leave/Remain vote
was not dictated by a debate on the different models of integration, but rather by issues of identity,
migration, economic and social protection (Colantone and Stanig 2018; Curtice 2017; Ford and
Goodwin 2017; Jennings and Stoker 2017).
As such, while the way in which these tensions and divides have led to the Referendum and to
Brexit is specific to the UK, they have simply taken other forms in other contexts, such as the growth
of populist and nationalist parties, especially after the Great Recession, and the transformation of the
space of political competition (Margalit 2019; Pappas and Kriesi 2015). If this is true, and apart from
a predictable honeymoon period, whose duration is entirely determined by unpredictable
circumstances, there are no reasons why Brexit should solve those problems or eradicate those deeper
issues. In turn, removing the ‘European institutional layer’ is not guaranteed to restore the cabinet’s
centrality within a renewed parliamentary sovereignty (Young 2017).
Each model of democracy rests on a combination of institutional and political factors that
mutually reinforce each other. We have described how this reciprocal support has not occurred in the
past two decades in the British case, and put forward an explanation as to why it could further manifest
its limits in the future. We are not advocating a post-Brexit consensual style (Richardson 2018); nor
are we suggesting that it could represent a prototype for what has been dubbed a new model of
‘cooperative majoritarianism' (Blondel and Battegazzorre 2003). We have simply framed the troubled
years after the EU referendum in a longer temporal perspective; as the abrupt surfacing of underlying
societal and institutional frictions, and not as an exceptional period that has already come to an end.
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