And if you have yet to decide, may I humbly offer a candidate suggestion?
He's not on the ballot in every state (he wasn't here in Rhode Island, unfortunately), but if he is, he's truly the right person for the job. The statesmanship of Lincoln, the ideals and strong right hook of Captain America (because evil dictators aren't going to punch themselves), and the rise from humble, immigrant roots (he comes from a Danish background, you know) that makes for the Great American Success Story.