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We examine how tightening reelection hurdles for incumbents can curb political polarization and increase welfare. We use a two-period model in which a politician is elected for office in the first ...
We examine how tightening reelection hurdles for incumbents can curb political polarization and increase welfare. We use a two-period model in which a politician is elected for office in the first period and enacts a new policy. In the second period, elections take place between the incumbent and a challenger, and the winning candidate chooses the extent to which the first-period policy is reformed. Reforming a policy is costly, and such costs increase with the policy shift and are borne by parties and voters. We show that raising the vote-share needed for re-election above one half reduces policy polarization and increases welfare. Moreover, the latter measures depend on the re-election threshold in a non-monotonic way and a particular (intermediate) threshold simultaneously minimizes policy polarization and maximizes welfare.