Hillary won the primaries simple because independents couldn't vote in closed primaries and Bernie Sanders didn't get enough of the Hispanic and the Black vote. There was no cheating, there may have been talk but in the end it was a fair and square election.
Trump is loosing now because all his outrageousness is not working with the general population the way it did in the republican primaries and because obviously, someone is digging up stuff and Trump is not able to shrug it all off like he did some stuff in the primary election.
Now that Hillary is on a sure path to winning the Presidency (it can't come soon enough, I am so tired of this) we are once again hearing stuff about voter fraud. Giuliani and Trump is talking about inner cities and how the democrats have control over the inner cities and the election will be rigged. I suppose Trump is going to go down fighting.
Trump Isn’t Teflon