Mitt Romney better choose wisely because, according to a new CBS News/New York Times poll, voters say who they cast their ballot for depends a lot on a candidate’s running mate. Twenty-four percent of registered voters surveyed said the VP choice has a big influence on whom they vote for, 74 percent said it matters either a lot or somewhat, and 48 percent said the candidate’s pick matters somewhat. Only 25 percent don’t care at all whom their candidate chooses. While the poll finds that Republican voter enthusiasm has grown from 36 percent in March to 49 percent since Romney secured the nomination, Democratic enthusiasm has begun to wane. Overall, though, voters aren’t as psyched about the election as they were in 2008.