Andrea Moro Webpage

Since 1914, the U.S. Senate has been elected and incumbent senators allowed to run for reelection without limit. This differs from several other elected offices in the U.S., which impose term limits on incumbents. Term limits may harm the electorate if tenure is beneficial or if they force high quality candidates to retire but may also benefit the electorate if they cause higher quality candidates to run. We investigate how changes in electoral design affect voter utility by specifying and structurally estimating a dynamic model of voter decisions. We find that tenure effects for the U.S. Senate are negative or small and that incumbents face weaker challengers than candidates running for open seats. Because of this, term limits can significantly increase voter welfare.