I stumbled across the very useful "Politico guide for a caucus bash." The guide offers suggestions for food, drinks, soundtrack and party gifts. All you have to do is pick your candidate.
If you like Huckabee, make sure to pick up some low-cal snack options. If you're rooting for Giuliani, feel free to play anything by Frank Sinatra. Check out the party guide for yourself. Who says politics can't be fun? And... I love theme parties!