I don't know that she helped him win the primaries. Although watching him campaign I felt he was the best choice to beat her, and steer the government away from massive, overbearing socialism, whereas Hillary would've steered us harder into it. And I don't think I'm alone in that thinking.
Given the choice between Hillary and ANYONE on the other ticket, people that didn't like her as a person OR her policies OR her party's policies would have voted against her. Crap, I certainly did vote against her, and I very much dislike Trump. GOD I wish he would put a good FILTER in front of what he says; I have never heard such poor speeches and read such horrible text- repetitive, uninformative, unnecessarily argumentative, disrespectful, often even childish.
How he won the primaries was not about Hillary, but about people being absolutely frustrated by the "established" Republicans who were not fighting hard enough against what the Democrats had been doing and would continue to do. Most of the other candidates were tow-the-line-dye-in-the-wool-establishment Republicans. He was not. I agree that he was probably the best candidate to beat her. What a strange moment in political history.
We DESPERATELY need instant runoff voting (ranked choice voting), for primaries and elections:
http://fairvote.org