What's the most insane rumor you've heard about a candidate for public office, in the U.S. or elsewhere?

And the timer is set for 30 seconds.

Since the OP title includes “most insane”, I don’t think “semi-credible” is necessary here.

For my money, the rumors that George W. Bush was actually a winged lizard are pretty hard to beat.

I don’t believe the wings part.