On the relationship between party polarization and citizen polarization

Do party policy offerings simply reflect public opinion or do parties shape public demand for policies? Theories of party position-taking and the operation of democracy expect parties to track their supporters’ positions, while scholarship of public opinion has shown voters often adopt the position of their preferred parties. We apply both of these theoretical expectations to the relationship between citizen polarization and party polarization and additionally argue that the relationship between them should be stronger among more politically more engaged and sophisticated citizens. We draw on aggregated survey data from 174 cross-national and national election studies from 19 established democracies, to assess the extent to which citizen polarization responds to party polarization, the extent to which parties respond to changes in citizen polarization, and whether these relationships differ across different groups of citizens. We estimate seemingly unrelated error-correction models employing data on party and citizen positions from 1971 to 2019. Our findings suggest that citizen polarization follows party polarization and also that politically engaged and sophisticated citizens are more responsive to changes in party polarization than the politically less engaged and unsophisticated. In contrast, we find little evidence that party polarization responds to changes in citizen polarization.

How party polarization shapes the structuring of policy preferences in Europe

A significant body of literature has addressed the impact of party polarization on voting behavior. Yet little is known of the relationship between party polarization and belief systems. The present study argues that party polarization enhances the ideological consistency of belief systems and does so for the citizenry as a whole. We first demonstrate that the more party systems are polarized on economic and sociocultural issues, the more consistently belief systems are aligned with the progressive-conservative continuum. Second, we show that ideological consistency is greater in highly polarized party systems, not only among the most politically attuned Europeans but also among those with lower levels of political sophistication. Results have implications for our understanding of citizen competence and responsiveness to elite cues in polarized party systems.

Partisan Fractures in U.S. Federalism’s COVID-19 Policy Responses

The comparatively poor U.S. response to COVID-19 was not due to federal inaction or a flawed federal system per se but to party polarization and presidential and gubernatorial preferences that frustrated federalism’s capacity to respond more effectively. The U.S. response is examined in terms of four models: coercive or regulatory federalism, nationalist cooperative federalism, non-centralized cooperative federalism, and dual federalism--finding that state-led dual federalism was the predominant response. The crisis also raised questions about interpretations of “federal inaction” because party divisions led some to regard the federal government’s response as inadequate while others viewed it as appropriate.

Political Interaction Beyond Party Lines: Communication Ties and Party Polarization in Parliamentary Twitter Networks

A growing body of research has examined the uptake of social media by politicians, the formation of communication ties in online political networks, and the interplay between social media and political polarization. However, few studies have analyzed how social media are affecting communication in parliamentary networks. This is especially relevant in highly fragmented political systems in which collaboration between political parties is crucial to win support in parliament. Does MPs’ use of social media foster communications among parliamentarians who think differently, or does it result in like-minded clusters polarized along party lines, confining MPs to those who think alike? This study analyzes the formation of communication ties and the degree of homophily in the Dutch MPs’ @mention Twitter network. We employed exponential random graph models on a 1-year sample of all tweets in which Dutch MPs mentioned each other ( N = 7,356) to discover the network parameters (reciprocity, popularity, and brokerage) and individual attributes (seniority, participation in the parliamentary commissions, age, gender, and geographical area) that facilitate communication ties among parliamentarians. Also, we measured party polarization by calculating the external–internal index of the mentions. Dutch MPs’ communication ties arise from network dynamics (reciprocity, brokerage, and popularity) and from MPs’ participation in the parliamentary commissions, age, gender, and geographical area. Furthermore, there is a high degree of cross-party interactions in the Dutch MPs’ mentions Twitter network. Our results refute the existence of “echo chambers” in the Dutch MPs’ mentions Twitter network and support the hypothesis that social media can open up spaces for discussion among political parties. This is particularly important in fragmented consensus democracies where negotiation and coordination between parties to form coalitions is key.

Clarity of voter choices: neglected foundation for ideological congruence

Ideological congruence between voters and governments is desirable, the wisdom goes, because it implies enactment of policies close to those preferred by voters. Party polarization plays a paradoxical role here: more polarization reduces voter-government congruence if parties making up a government move away from the center-ground where most individual voters are located; yet increasing polarization permits those governments’ policies to become more distinct in the eyes of voters. This paper investigates how political system clarity helps to resolve this paradox. We examine the interplay of several sources of clarity and, in particular, of the joint role of party and voter polarization. We argue and find that, if polarization of survey respondents increases in step with party polarization, this provides clarity that can override party polarization’s negative effect on voter-government congruence. But other types of clarity also play important roles in accounting for the range of values that congruence takes on.