Information Acquisition, Ideology and Turnout: Theory and Evidence From Britain

Valentino Larcinese
2009 Journal of Theoretical Politics  
The amount of political information that voters decide to acquire during an electoral campaign depends, among other things, on prior ideological beliefs about parties and/or candidates. Voters that are ex ante indifferent about the candidates attach little value to information because they perceive that voting itself will have little value. Voters that are ex ante very ideological also attach little value to information because they think that the news will hardly change their opinion. Thus,
more » ... h incentives to be informed can be found at intermediate levels of partisanship. Moreover, the impact of increased political knowledge on turnout is asymmetric: new information increases the probability of voting of indifferent voters but decreases that of very ideological voters. These results are derived within a decision theoretical model of information acquisition and turnout that combines the Riker-Ordeshook (1968) approach to voting behaviour with the Becker (1965) approach to personal production functions. These predictions are then tested on survey data from the 1997 British Election Study (Heath et al., 1999) . Our empirical findings are compatible with all the results of the theoretical exercise. KEY WORDS . elections . ideology . information . mass media . partisanship . political knowledge . political participation . turnout I wish to thank as well as participants in a number of meetings and seminars for their useful comments and suggestions. The usual caveat applies. Financial support from the European Commission under the TMR Scheme (Marie Curie Fellowship) and from ESRC is gratefully acknowledged.
doi:10.1177/0951629808100765 fatcat:jm5xazzwjbdolo7532qp5l2y3a