Some number of people will believe anything, that's just the way the Bell Curve works, and Trump is not going to move the needle on that number with his tweets. It won't even change when the GOP retains House and Senate majorities while Trump loses in a landslide, an event that should disprove his nutbaggery.
http://www.redstate.com/streiff/2016/10/17/donald-trump-announces-hes-starting-second-long-con-america/