>But, some historical examples come to mind from 6th grade civics class -- it may be apocraphal! Operatives of political parties would gather up folks on a wagon and bring them to the polling place. The promise of a shot of whiskey or a couple bucks "motivated" their choices. That would certainly be a lot more effective if you could provide proof, such as a ballot receipt, of exactly who you voted for.

Now we're talking, capitalism at work! I'll put my vote up on eBay, see how much I can get :)