The anti-vote
So here's my thought: Instead of voting for a candidate, what if you could vote *against* a candidate? Wouldn't that be useful sometimes, when you have a choice of candidates that don't impress you at all, and you feel like you're voting for the lesser of two (or more) evils?
I think the big problem with this idea is that in some races, you'd end up with no one voted for -- just candidates voted against.
But that could be interesting, as well. Then we'd be left with anti-presidents -- politicians who would sponsor legislation and try to enact laws and policies that, if passed, we would do the exact opposite of.
Let's NOT invade Iraq...
Let's NOT enforce abstinance as the only valid form of birth control for adults up to 29 years old...
Let's NOT impede scientists from reporting on global warming ... etc.