Parties, Elections, and Political Behaviour
- Joris Frese, Simon Hix and Romain Lachat (2025) Quality not Quantity: How a VAA Affected Voting Behavior in Three Large-Scale Field Experiments, British Journal of Political Science 55(e176).
- Simon Hix and Kevin Cunningham (2025) Still Second Order National Elections? Evaluating the Classic Model After the 2024 European Elections, West European Politics 49(1) 243-264.
- Joris Frese, Juho Härkönen and Simon Hix (2025) Brextinction? How Cohort Replacement has Transformed Support for Brexit, European Journal of Political Research 64(3) 1519-1532.
- Simon Hix, Clifton van der Linden, Joanna Massie, Mark Pickup, and Justin Savoie (2023) Where is the EU-UK Relationship Heading? A Conjoint Survey Experiment of Brexit Trade-Offs, European Union Politics 24(1) 184-205.
- Tarik Abou-Chadi and Simon Hix (2021) Brahmin Left versus Merchant Right? Education, Class, Multiparty Competition, and Redistribution in Western Europe, British Journal of Sociology 72(1) 79-92.
- Simon Hix, Eric Kaufmann and Thomas J. Leeper (2021) Pricing Immigration, Journal of Experimental Political Science 8(1) 63-74.
- Giacomo Benedetto, Simon Hix and Nicola Mastrorocco (2020) The Rise and Fall of Social Democracy, 1918 to 2017, American Political Science Review 114(3) 928-939.
- Matthew Goodwin, Simon Hix and Mark Pickup (2020) For and Against Brexit: A Survey Experiment of the Impact of Campaign Effects on Public Attitudes toward EU Membership, British Journal of Political Science 50(2) 481-495.
- Simon Hix and Abdul Noury (2018) Power Versus Ideology: Political Group Switching in the European Parliament, Legislative Studies Quarterly 43(4) 551-594.
- Simon Hix and Michael Marsh (2011) Second-Order Effects Plus Pan-European Political Swings: An Analysis of European Parliament Elections Across Time, Electoral Studies 30(1) 4-15.
- Simon Hix, Bjørn Høyland and Nick Vivyan (2010) From Doves to Hawks: A Spatial Analysis of Voting in the Monetary Policy Committee of the Bank of England, European Journal of Political Research 49(6) 731-758.
- Simon Hix and Michael Marsh (2007) Punishment or Protest? Understanding European Parliament Elections, Journal of Politics 69(2) 495-510.
- Amie Kreppel and Simon Hix (2003) From ‘Grand Coalition’ to Left-Right Confrontation: Explaining the Shifting Structure of Party Competition in the European Parliament, Comparative Political Studies 36(1/2) 75-96.
- Matthew Gabel and Simon Hix (2005) Understanding Public Support for British Membership of the Single Currency, Political Studies 53(1) 65-81.
- Matthew Gabel and Simon Hix (2002) Defining the EU Political Space: An Empirical Study of the European Elections Manifestos, 1979-1999, Comparative Political Studies 35(8) 934-964.
- Simon Hix (1999) Dimensions and Alignments in European Union Politics: Cognitive Constraints and Partisan Responses, European Journal of Political Research 35(1) 69-106.
Electoral Systems, Legislative Politics, and Democratic Institutions
- Simon Hix and Bjørn Høyland (2026) Political Preferences, Policy Loss and Shifting Support for European Integration, Comparative Political Studies, First View.
- Catherine E. De Vries, Simon Hix and Miriam Sorace (2025) Reforming Supranational Institutions: Insights from a Conjoint Experiment in 16 Countries, European Union Politics, 26(4) 649-666.
- Thomas G. Fleming, Simon Hix and Radoslaw Zubek (2025) The Origins of Centralized Agenda Control at Westminster: Consensus or Controversy? Legislative Studies Quarterly 50(3) e12480.
- Simon Hix and Richard Whitaker (2024) The Political Space in the European Parliament: Measuring MEPs’ Preferences Amid the Rise of Euroscepticism, European Journal of Political Research 63(1) 153-171.
- Jon Fiva and Simon Hix (2021) Electoral Reform and Strategic Coordination, British Journal of Political Science 51(4) 1782-1791.
- Simon Hix (2020) Remaking Democracy: Ireland as a Role-Model – The 2019 Peter Mair Lecture, Irish Political Studies 35(4) 585-601.
- Bjørn Høyland, Sara B. Hobolt and Simon Hix (2019) Career Ambitions and Legislative Participation: The Moderating Effect of Electoral Institutions, British Journal of Political Science 49(2) 491-512.
- Simon Hix, Abdul Noury and Gérard Roland (2018) Is There a Selection Bias in Roll Call Votes? Evidence from the European Parliament, Public Choice 176(1-2) 211-228.
- Thomas Däubler and Simon Hix (2018) Ballot Structure, List Flexibility and Policy Representation, Journal of European Public Policy 25(12) 1798-1816.
- Jack Blumenau, Andrew C. Eggers, Dominik Hangartner and Simon Hix (2017) Open/Closed List and Party Choice: Experimental Evidence from the UK, British Journal of Political Science 47(4) 809-827.
- Simon Hix, Rafael Hortala-Valve and Guillem Riambau-Armet (2017) The Effects of District Magnitude on Voting Behavior, Journal of Politics 79(1) 356-361.
- Simon Hix and Abdul Noury, (2015) Government-Opposition or Left-Right? The Institutional Determinants of Voting in Legislatures, Political Science Research and Methods 4(2) 249-273.
- John M. Carey and Simon Hix (2013) Consequences of Electoral Rules for Patterns of Redistribution and Regulation, Perspectives on Politics 11(3) 820-824.
- John M. Carey, Simon Hix, Mala Htun, Shaheen Mozzafar, G. Bingham Powell and Andrew Reynolds (2013) Political Scientists as Electoral System Engineers, Perspectives on Politics 11(3) 827-840.
- John M. Carey and Simon Hix (2013) District Magnitude and Representation of the Majority’s Preferences: A Comment and Reinterpretation, Public Choice 154(1-2) 139-148.
- John M. Carey and Simon Hix (2011) The Electoral Sweet Spot: Low-Magnitude Proportional Electoral Systems, American Journal of Political Science 55(2) 383-339.
- Hae-Won Jun and Simon Hix (2010) Electoral Systems, Political Career Paths and Legislative Behavior: Evidence from South Korea’s Mixed-Member System, Japanese Journal of Political Science 11(2) 153-171.
- Hae-Won Jun and Simon Hix (2009) Party Competition in the Parliamentary Arena: The Case of the Korean National Assembly, Party Politics 15(6) 667-694.
- Giacomo Benedetto and Simon Hix (2007) The Rejected, the Dejected and the Ejected: Explaining Government Rebels in the 2001-2005 British House of Commons, Comparative Political Studies 40(7) 755-781.
- Simon Hix (2004) Electoral Institutions and Legislative Behavior: Explaining Voting Defection in the European Parliament, World Politics 56(1) 194-223. [Won APSA Longley Prize for best article on Representation & Electoral Systems.]
- Simon Hix (2002) Parliamentary Behavior with Two Principals: Preferences, Parties, and Voting in the European Parliament, American Journal of Political Science 46(3) 688-698.
- Simon Hix (2002) Constitutional Agenda-Setting Through Discretion in Rule Interpretation: Why the European Parliament Won at Amsterdam, British Journal of Political Science 32(2) 259-280.
- Simon Hix (2001) Legislative Behaviour and Party Competition in the European Parliament: An Application of Nominate to the EU, Journal of Common Market Studies 39(4) 663-688.
Datasets
VoteWatch Europe
VoteWatch Europe was a not-for-profit organisation based in Brussels that tracked voting behaviour in the European Parliament and EU Council. The project was founded by Simon Hix, Doru Frantescu, and Sara Hagemann, and ran from 2008 until June 2022. The project used roll-call data collection and analysis techniques developed by Simon Hix and Abdul Noury. The data collected by VoteWatch can be downloaded here.
Citation: Simon Hix, Doru Frantescu & Sara Hagemann (2022) VoteWatch Europe European Parliament and EU Council Voting Data, September 2022.
- EP6 (July 2004-May 2009) roll-call votes and vote info
- EP7 (July 2009-May 2014) roll-call votes and vote info
- EP8 (July 2014-April 2019) roll-call votes and vote info
- EP9 (partial) (July 2019-June 2022) roll-call votes and vote info
- All VoteWatch EP Voting Data (in a single .zip file)
- EU Council (July 2009-February 2022) votes
- Codebook for VoteWatch EP and Council voting data (updated 1 November 2022)
Rise and Fall of Social Democracy, 1918-2017
This project, with Giacomo Benedetto (Royal Holloway) and Nicola Mastrorocco (Trinity College Dublin), looks at the correlates of the rise and decline of social democratic parties in 100 years of elections (between 1918 and 2017) – in 579 elections in 31 countries in Europe. The dataset includes the election results for social democratic and other parties as well as a large number of political, economic, and social variables for every election.
Electoral System Design Project
This project, collaborative with John Carey (Dartmouth College) examines all elections between 1945-2006 in democracies with populations over one million — 610 elections in all, from 81 countries. The dataset contains information on constitutional design and electoral rules (including mean and median magnitudes of districts in each election, legal thresholds, mixed-member formats), on disproportionality and party system fragmentation, on various indicators of political economy (growth rates, government spending, surpluses/deficits, inequality, human development index), and on demographic and historical information.
Roll Call Votes in the European Parliament
We have collected how each MEP voted in each record (roll-call vote) in the first six elected European Parliaments:
- EP1 (July 1979-May 1984)
- EP2 (July 1984-May 1989)
- EP3 (July 1989-May 1994)
- EP4 (July 1994-May 1999)
- EP5 (July 1999-May 2004)
- EP6 (July 2004-May 2009)
The data are publicly available for academic research, teaching or for any other not-for-profit activity.
European Parliament Research Group (EPRG) MEP Survey Data
This website presents a new survey of Members of the European Parliament MEPs conducted during 2015. The survey adds to a time series of MEP surveys carried out by the European Parliament Research Group. The data allow for comparison of MEPs’ views with those of the EU public, European Parliament candidates, and members of national and regional parliaments in Europe.