I'd think the shambling corpse of Theodore Roosevelt would be a pretty decent one.

Sure, literally all he does is shamble along after "braaaaaaains", but that's a perfect litmus test for whether you belong in politics.
If he doesn't try to eat your brain, you're clearly too stupid to be in politics.
If he does try to eat your brain, you need to get the fuck out of politics before it makes you too stupid to live.