Bush has big dough.
http://www.wsj.com/articles/jeb-bush-drawing-big-bucks-from-gop-establishment-1438127424
Big dough buys a lot of votes, especially useful in a primary where there is so much division of the total.
money only gets a candidate so far. There is a saturation point where the candidate is actually judged by their actions not their words.
Just ask Majority Leader Cantor.
Oh, wait...