I have checked into several internet allegations of voter fraud in another thread. So far, I have not been able to verify any of them. While there may be some voter fraud someplace, so far this is turning out to be a post-election urban legend.
To win any of the next elections will require cool reflection and calm analysis of the actual results. It takes listening to those who don't agree with you. This is not something that Americans are all that good at doing these days.