Published online by Cambridge University Press: 04 January 2012
The American vice president's most notable constitutional function is that of succession: if the president unexpectedly leaves office, the vice president becomes president. The process of selecting vice-presidential running mates has fallen into fewer hands over time, moving from the electorate, to party bosses and delegates, to a single person: the presidential candidate. The selection process presents challenges for democratic governance: electoral considerations may provide presidential candidates with incentive to choose vice-presidential running mates who differ from themselves politically. In cases of succession, this can lead to undemocratic outcomes and unstable policy.