Definitions of Polarization

Elite Polarization

Ideological polarization on the elite level can be measured in its simplest form as the absolute ideological distance between the positions of the most extreme party on the left and the most extreme party on the right of the political spectrum.

A number of studies have examined whether ideological polarization among parties translates into affective polarization among the mass public (Banda and Cluverius (2018)). However, as these studies were conducted in the dichotomous US party system, the question remains to what extent these findings generalize to multiparty systems.

On the other hand, very few studies have looked at elite affective polarization, i.e. the level of dislike between politicians. Such is difficult to grasp, as it would require anonymous surveying of elected officials.

Leininger, A., Grünewald, F. & Buntfuß, N. (2023, August 11).
Ideological and affective polarization in multiparty systems. doi.org/10.31235/osf.io/mz6rs

Measures

MeasurePolarization
Party-System Compactnessideological, elite
Dispersionideological, elite
Party-System Extremismideological, elite
Polarization Indexideological, elite, mass
Rangeideological, elite
SDideological, elite, mass
Varianceideological, elite

Use cases

TitleAuthors
Challenges to established partiesAbedi (2002)
Party System CompactnessAlvarez and Nagler (2004)
The Activists Who Divide UsAmitai (2023)
The Spatial Structure of Party CompetitionAndrews and Money (2009)
Elite polarisation and voting turnout in Latin AmericaBéjar et al. (2020)
Political polarisation and environmental attitudesBirch (2020)
The impact of party polarisation and postmaterialism on voter turnoutCrepaz (1990)
Cleavage politics, polarisation and participation in Western EuropeBorbáth et al. (2023)
Modeling ideological polarisation in democratic party systemsDalton (2021)
The Quantity and the Quality of Party SystemsDalton (2008)
Missing Links in Party-System PolarisationCurini and Hino (2012)
Party System Polarisation and Electoral BehaviorDassonneville and Çakır (2021)
Party-System Extremism in Majoritarian and Proportional Electoral SystemsDow (2011)
Parties Policy Programmes and the Dog that Didnt BarkEzrow (2008)
Does voter polarisation induce party extremism?Dreyer and Bauer (2019)
The Variance MattersEzrow (2007)
Centre PartiesHazan (1997)
The mobilising effect of political choiceHobolt and Hoerner (2019)
Party Polarisation and Mass PartisanshipLupu (2015)
ReflectionsMair and Castles (1997)
Electoral Rule Disproportionality and Platform PolarisationMatakos et al. (2016)
Left-Right Polarisation In National Party SystemsSigelman and Yough (1978)
Party Systems and Government StabilityTaylor and Herman (1971)
Affective polarisation in multiparty systemsWagner (2021)
Meaningful choices, political supply, and institutional effectivenessWessels and Schmitt (2008)