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Party Systems

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lightbulbAbout this topic
Party systems refer to the structured interaction and competition among political parties within a political system, characterized by the number of parties, their relative strength, and the rules governing their behavior. This concept analyzes how parties influence governance, electoral outcomes, and political stability in a given context.
lightbulbAbout this topic
Party systems refer to the structured interaction and competition among political parties within a political system, characterized by the number of parties, their relative strength, and the rules governing their behavior. This concept analyzes how parties influence governance, electoral outcomes, and political stability in a given context.

Key research themes

1. How do institutional designs and political contexts shape party system transformations and institutionalization?

This research area focuses on understanding the multifaceted factors—such as political reforms, electoral system changes, decentralization, and social-economic shifts—that drive transformations in party systems and their institutionalization particularly in emerging democracies. It investigates how these institutional and political structures affect party stability, party collapse, and the overall functioning of democratic representation.

Key finding: Identifies that transformations of Latin American party systems since the third wave of democratization are shaped by institutional reforms (beyond just electoral systems), decentralization processes, shifts in electoral... Read more
Key finding: Reviews evidence that party system institutionalization varies widely across regions (Asia, Africa, Latin America) with cases of both successful party building and frequent party collapse; highlights that high polarization... Read more
Key finding: Demonstrates through empirical analysis in seven European countries how domestic political factors—such as party system parameters and national institutional peculiarities—play a stronger role in explaining variance in party... Read more
Key finding: Develops a formal model inspired by the Brazilian system showing that in highly fragmented party systems electoral alliances are strategically formed through inter-party transfers; finds that leading parties tend to offer... Read more

2. What roles do parties’ internal organizations and membership structures play in contemporary party vitality and intra-party democracy?

This research theme investigates the organization and internal functioning of political parties, focusing on how party resources, membership decline or transformation, intra-party democracy, and candidate selection mechanisms influence party adaptation, legitimacy, and electoral success. The analysis encompasses cross-national comparative data on party organizations as well as theoretical insights on membership construction and party reform.

Key finding: Presents large-scale comparative survey data challenging assumptions of convergence in party organizations; finds continuing declines in party membership but simultaneous increases in financial resources and paid staff,... Read more
Key finding: Develops a tripartite analytical framework conceptualizing party membership as socially constructed by the interplay of state-imposed legal frameworks, individual participatory preferences, and strategic party organizational... Read more
Key finding: Synthesizes advances in party organization literature, highlighting the need for clearer conceptualizations of party structures and intra-party democracy; emphasizes that party reform agendas are shaped by social perceptions... Read more
Key finding: Provides empirical evidence from European countries on candidate selection practices, showing variations in centralized versus decentralized selectors’ prioritization of candidate competence, loyalty, or electability; reveals... Read more

3. How do party dynamics influence democratic representation, accountability, and political polarization?

This area explores theoretical and empirical questions about how political parties mediate between citizens and the state, shape democratic representation via internal coordination and interest aggregation, affect electoral accountability through candidate selection and polarization, and function within normative frameworks such as republican democracy and anti-factionalism ideals.

Key finding: Argues that beyond enabling electoral competition, political parties in republican democracy are essential for contestation and interest-formation functions, advancing a positive reevaluation of parties’ contributions to... Read more
Key finding: Proposes a typology distinguishing full political parties from diminished subtypes based on two key attributes: horizontal coordination among ambitious politicians and vertical aggregation of collective interests; argues that... Read more
Key finding: Formalizes and empirically tests Maurice Duverger's foundational propositions on party structure across a global sample, confirming 12 of 19 bivariate hypotheses and showing systematic relationships—such as how party origin... Read more
Key finding: Models the strategic role of party polarization in candidate selection, demonstrating that parties use ideological polarization as a tool to discipline legislators and shape electoral competition, leading to compromises... Read more
Key finding: Develops an infinitely repeated game model where ideological polarization between parties enhances electoral accountability on non-ideological issues for the median voter, revealing a trade-off where increased polarization... Read more
Key finding: Articulates a normative ideal of non-factionalism in party politics as a negative, plural, and systemic ideal aimed at managing the inevitable tensions and pathological group conflicts intrinsic to party dynamics, emphasizing... Read more
Key finding: Critically assesses the Responsible Parties Institutional Model (RPIM) from a realist political theory perspective, contending that while RPIM presents concentrated party organization and two-party dominance as pragmatically... Read more

All papers in Party Systems

Prezenta lucrare investighează tensiunile dintre eficiența administrativă și legitimitatea democratică în România, analizând erodarea pluralismului politic sub impactul populismului și al discursului „liderului salvator”. Prin intermediul... more
This study seeks to conceptualize the phenomenon of political dominance within a competitive party system, advancing a multidimensional analytical framework rooted in Indian experience. Existing literature on party system developed by... more
C'est en inventant les boîtes-cadeaux Smartbox que Pierre-Édouard Stérin a fait fortune. Exilé fiscal en Belgique depuis 2012, le milliardaire catholique ultraconservateur, encore récemment inconnu du grand public, est dépeint dans comme... more
The 2024 European Parliament elections in Greece tested both New Democracy’s (ND) trajectory towards predominant party status and the second-order election (SOE) model’s relevance. Drawing on aggregate results and survey data, this... more
Widely cited but increasingly seldom read, Maurice Duverger (1917-2014) exemplifies the fate of many canonical thinkers not only in political science. This monograph revisits his legacy through an in-depth analysis of three interconnected... more
Today, the eminent French political scientist Maurice Duverger (1917–2014) has met the fate that has befallen many classics: almost everyone cites him, but almost no one actually reads him anymore. This monograph, on the other hand,... more
This volume presents new and original research from eleven distinguished scholars on the relationship of the Bible, including the New Testament and Pseudepigrapha, with ancient Babylonia and Assyria. It combines archaeological and art... more
Silent Disco History and Origins: Reconstructing the Emergence and Authorship of the Headphone Party Format. This paper examines the socio‑technological history and origins of the “silent disco”, tracing how the headphone party format... more
In recent years, gender equality and LGBTQIA+ issues have gained increasing visibility across Europe, often becoming sources of political tension and conflict across the political spectrum in several countries (Abou-Chadi et al., 2021;... more
The purpose of the present article is to analyze the electoral returns of the Kazakhstani elections held in the 1995-2021 period to estimate both the static (such as frag-mentation) and the dynamic properties (fluidity) of the Kazakhstani... more
African party systems vary considerably in their patterns of stability and change over time. This article examines how economic growth has been shaped by such party system fluidity-in particular, the frequency, scope and variety of... more
The purpose of the present article is to analyze the electoral returns of the Kazakhstani elections held in the 1995-2021 period to estimate both the static (such as fragmentation) and the dynamic properties (fluidity) of the Kazakhstani... more
Councils simulated 107 English councils in this cycle Mean NOC council fraction 63.22% Central estimate 99% confidence interval 51.40%-74.77% From simulation distribution Simulation seed 20260507 Fixed, reproducible Iterations 2,000 Per... more
un escalamiento de menciones negativas que antecede la reforma constitucional de 2024. En el plano operativo, se observan diferencias entre el desempeño del INAI y el del órgano sustituto en la resolución de recursos de revisión. Los... more
This paper contributes to the debate about the ideological coherence of the Brazilian party system. Using discriminant function analysis of 20 years of surveys of Brazilian legislators, we find that the party system now exhibits... more
Political communication in the Slovak political space has its own specifics, but it follows the trend of many democracies towards coarser vocabulary, vulgarisation, and escalation of political conflict. The aim of this study is to... more
У монографії на засадах міждисциплінарних методологічних підходів та сучасних наукових вимірів здійснюється комплексний аналіз феномена органоїдного інтелекту як нового етапу розвитку біоцифрової епохи. Розглядаються онтологічні... more
In der öffentlichen Debatte ist die Finanzierung der politischen Parteien ein Dauerbrenner – für Studierende handelt es sich hingegen eher um ein Randthema in Grundstudium und Examensvorbereitung. Ziel dieses Beitrages ist es, ein... more
This chapter explores the evolution of political cleavages and party systems in Belgium from the nineteenth century to the present. It analyses the impact of major divides, such as Church vs. State, class, and language cleavages, on the... more
en junio de 2023, no solamente supuso el fin del denominado "Grupo Atlacomulco", una red de familias que, a través del Partido Revolucionario Institucional (pri) detentaron el poder durante más de 70 años en esta entidad, sino que también... more
Esta tesis realiza un análisis comparado de la nacionalización de los sistemas de partidos de dos países andinos (Ecuador y Perú), enfocándose en responder a la pregunta: ¿qué factores explican la variación de la nacionalización de los... more
The politicization of ethnic minority is a common phenomenon despite the fact that its manifestation may differ in different contexts. The configuration of the factors that have an impact on the politicization of ethnic minorities varies... more
los. ciudadanos. comenzaron. a. crecer,. pero. de. pronto. el. proceso.se.detuvo.para.casi.todos..Y.ahora,.¿qué.pasa?. Asistimos.a. una.lucha.decisiva.que.libran.algunos.por.crecer.nuevamente,.y.... more
This article examines the structural impossibility of combating corruption within partybased and clientelist systems. Political parties, often serving private interests or rented to organized crime, have become patronage machines... more
1. The Supreme Court of India, on 29 January 2026, found that the UGC Regulations, gazetted on 13 January 2026, “were prima facie vague and easy to misuse”. 2. The writer notes that upwardly mobile, neo-rich, affluent, educated OBCs (and... more
This document constitutes the formal, architectural, and conceptual reference for Endogenously-Constrained AI (ECA). ECA is not an alternative theoretical framework to Crowd-Based Dynamics (CBD), nor an extension of its foundational laws.... more
Colaborador en el PYDLOS y en el PROMAS. Consultor en Hidrología, en forma individual, y con Consultoras Nacionales e Internacionales. Tiene autoformación en Sistemas Electorales. Autor del libro Webster vs D´Hondt. El principio... more
Le dernier livre de Nicolas Sarkozy, Le Journal d’un prisonnier, a fait couler beaucoup d’encre, pour des raisons à la fois littéraires et politiques. L’ouvrage n’est pas seulement le récit d’un ancien président condamné, mais aussi une... more
The field of Patristics, or early Christian and Mediaeval Studies, traditionally works along the lines of historical and literary criticism. But this method is not always useful, especially when it comes to complex objects and... more
The article analyses the concept of symbolic politics and its potential for explaining the mechanisms of social protest movements and the means of struggle used. A detailed discussion of the protest events that took place in Lithuania in... more
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