I'm recalling a South Park episode where the schoolchildren are holding an election for a school mascot, because their original mascot was deemed politically incorrect after a series of protests. A prank that went too far led to the final two mascot choices being: 1) a sandwich unfit for consumption, and 2) an oversized feminine hygeine product.
Stan, one of the main characters, felt that either choice was terrible and thus, refused to vote. The entire town objected - apparently, *not* voting is one of the worst crimes to commit - and banished him.
During his exile, the topic of his banishment comes into conversation with an adult. The adult says,
But Stan, don't you know, it's always between a [EDIT: oversized feminine hygeine product] and a [EDIT: sandwich unfit for consumption]. Nearly every election since the beginning of time has been between some [EDIT: the former] and some [EDIT: the latter]. They're the only people who suck up enough to make it that far in politics.
Stan came back out of exile to cast a vote. After the votes were tallied, the result came back that the mascot Stan voted for lost in a giant landslide anyway. Stan then complained that his vote didn't count. Stan's father, Randy, explained with, "You can't judge the merits of voting on whether or not your candidate won."
Soon after the vote, however, news arrives that the people who protested the original mascot were all... dead. Since there was no longer anyone to object to the original school mascot, it was reinstated. Consequently, Stan's vote didn't count.
Moral of the story? Vote for Harry Truman. Well, he's dead, unfortunately. Then vote for Lyndon LaRouche.