So as of now, if you believe all the allegations, our top 4 choices are: 1) A guy (who according to one of his own party's debaters) claimed 4 bankruptcies losing investors' money 2) left a sponge in someone's brain 3) Used private server for Top Secret emails or 4) is a 74 year old self proclaimed Socialist who wants to be Commander-in-Chief after using CO status to get out of the service.
Wonderful!