We propose a positive theory that is consistent with two important features of social security programs around the world: (1) they redistribute income from young to old and (2) they induce retirement. We construct a voting model that includes a political campaign' or debate' prior to the...

Empirical distributions of election margins are computing using data on U.S. Congressional and state legislator election returns. We present some of the first empirical calculations of the frequency of close elections, showing that one of every 100,000 votes cast in U.S. elections, and one of...