Reuters primary polling: tracking thread.

[MisSkeptic]

Donald Trump 30%
Jeb Bush 11%
Mike Huckabee 7%
Scott Walker 7%
Rand Paul 6%
Marco Rubio 5%
Ben Carson 5%
John Kasich 3%
Rick Perry 3%
Chris Christie 3%
Ted Cruz 2%
Carly Fiorina 2%
Rick Santorum 2%
Bobby Jindal 2%
George Pataki 1%
Jim Gilmore 0%
Wouldn't vote 11%

http://polling.reuters.com/#!response/TR130/type/smallest/filters/PARTY_ID_:2/dates/20150727-20150731/collapsed/false/chart/table

You have more people who wouldn't vote for majority of the candidates. Other than Bush and Trump everyone is just taking up space at this time. I feel the younger Republican candidates will do better in the next Presidential election because of the crowded competition.