I'm kind of surprised this topic hasn't been used already, given the record-breaking unpopularity of America's political party front-runners.
Your mission, should you choose to take it, is to come up with the World's Worst Presidential Candidate That Might Actually Win! To be fair to non-Americans (or "lucky people"), this will not be limited to the US Presidency. Use of our current candidates is not prohibited, but you'll be hard-pressed to overcome the Unimaginative Hurdle.
Judging will take place WAY before election day, so get to it, and may the World's Worst Win! ... this contest, not the Presidency - I hope.
"There's no point in beating a dead horse ... except, of course, for the pure joy of it." - A. Whitney Brown