TY - JOUR

T1 - How campaigns polarize the electorate

T2 - Political polarization as an effect of the minimal effect theory within a multi-party system

AU - Hansen, Kasper M.

AU - Kosiara-Pedersen, Karina

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The minimal effect theory of campaign studies stipulates that intense political competition during campaigns assures and reinforces the initial party choice of the electorate. We find that this reinforcement is two-fold. During the campaign, the party preference of the voters’ in-group party increases while the party preference of the voters’ out-group parties decreases. Voters’ preference for their most preferred party (MPP) increases during the election campaign, while their preference for their least liked party decreases during the campaign (LPP). Across parties voters experience an increase in their preference for their most preferred party and a decrease for their least liked party as the campaign progresses. These trends show that the political campaign polarizes the electorate by increasing the affective distance between in-group party and out-group party preferences, thereby resulting in stronger political polarization after the campaign than before the campaign. The data utilized in this study is a large six-wave panel-study of Danish voters’ party preferences during the Danish parliamentary election of 2011. Thus, the analysis provides evidence of the minimal effect theory and of political polarization within a multi-party context.

AB - The minimal effect theory of campaign studies stipulates that intense political competition during campaigns assures and reinforces the initial party choice of the electorate. We find that this reinforcement is two-fold. During the campaign, the party preference of the voters’ in-group party increases while the party preference of the voters’ out-group parties decreases. Voters’ preference for their most preferred party (MPP) increases during the election campaign, while their preference for their least liked party decreases during the campaign (LPP). Across parties voters experience an increase in their preference for their most preferred party and a decrease for their least liked party as the campaign progresses. These trends show that the political campaign polarizes the electorate by increasing the affective distance between in-group party and out-group party preferences, thereby resulting in stronger political polarization after the campaign than before the campaign. The data utilized in this study is a large six-wave panel-study of Danish voters’ party preferences during the Danish parliamentary election of 2011. Thus, the analysis provides evidence of the minimal effect theory and of political polarization within a multi-party context.

KW - campaigns

KW - Denmark

KW - minimal effect theory

KW - multi-party

KW - polarization

U2 - 10.1177/1354068815593453

DO - 10.1177/1354068815593453

M3 - Journal article

AN - SCOPUS:85019064157

VL - 23

SP - 181

EP - 192

JO - Party Politics

JF - Party Politics

SN - 1354-0688

IS - 3

ER -