RCP（8/31 - 9/19）:
1. Donald Trump: 28.5%
2. Ben Carson: 18.8%
3. Jeb Bush: 7.8%
4. Macro Rubio: 7.3%
5. Ted Cruz: 6.5%
6. Carly Fiorina: 6.3%
7. Mike Huckabee: 4.8%
8. Rand Paul: 3.5%