Joshua Spivak: “In the general election, it is not clear that a vice presidential pick ever helps or even hurts the candidate. Studies have found that voters do not take running mates into account. Richard Nixon, who was on the Republican national ticket five times, believed that the vice presidential choice could serve only to damage the president. While the VP has occasionally seemed to provide momentum to the ticket, there is no evidence of a VP making a different in the race—with the possible exception of Lyndon Johnson in 1960.”

