week5_2 - Duverger’s Theory Duverger’s explanation...

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Unformatted text preview: Duverger’s Theory Duverger’s explanation: Mechanical effect: Disproportionality punishes minor parties severely. Psychological effect: Voters are reluctant to vote for third parties. The mechanical effect is not disputed. The Psychological Effect Under SMPR, Duverger argues, voters take account of both their preferences and the likelihood of influencing the outcome. ‘Wasted vote’ argument What is required for strategic voting Understanding of electoral system Expectations about outcomes Altruism ? Strategic Voting The UK: SMPR Compare survey and preference Compare closeness of front runners (close = vote is more likely to be pivotal) with vote for third party Germany: Mixed member Compare Erststimme and Zweitstimme Strategic Voting Canada: SMPR Compare strategic voting between voters who will benefit with those it might benefit Strength of preference between front runners The U.S. Third candidate strength within state. Does Duverger’s Theory hold? Considerable support for both mechanical and psychological effects However: Strategic behavior is not universal Any given voter will hardly ever influence outcome of election Other considerations...
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This note was uploaded on 11/01/2010 for the course POL pol140a taught by Professor Scheiner during the Fall '10 term at UC Davis.

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week5_2 - Duverger’s Theory Duverger’s explanation...

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