This year, that challenge falls to John Dennis, a self-described entrepreneur from San Francisco. Polling in the race is virtually nonexistent, but it's safe to say Dennis has a tough fight on his hands, as Pelosi has handily won re-election in recent years with at least 80 percent of the vote.
Still, like other underdog candidates we've seen so far this election cycle, Dennis is hoping to get some buzz via an outlandish attack ad. His recently released spot features an over-the-top "Wizard of Oz" theme, casting Pelosi as the Wicked Witch of the West. And of course Dennis is shown subduing her by, yes, melting her with a bucket of water.
You can watch the spot after the jump:
(Photo of Pelosi by Alex Wong/Getty Images)
- House Speaker Nancy Pelosi
- Wicked Witch of the West