Iowa Republican Presidential Caucus
Polling Data
| Poll | Date | Walker | Rubio | Huckabee | Paul | Bush | Carson | Cruz | Santorum | Trump | Christie | Perry | Fiorina | Kasich | Jindal | Spread |
|---|
| RCP Average | 4/25 - 6/8 | 18.3 | 9.8 | 9.5 | 9.3 | 8.5 | 8.5 | 6.8 | 4.7 | 4.5 | 4.3 | 3.0 | 2.8 | 2.0 | 1.0 | Walker +8.5 |
| Morning Consult | 5/31 - 6/8 | 18 | 7 | 10 | 10 | 10 | 5 | 4 | -- | 5 | 6 | -- | 2 | -- | -- | Walker +8 |
| Des Moines Register | 5/25 - 5/29 | 17 | 6 | 9 | 10 | 9 | 10 | 5 | 6 | 4 | 4 | 3 | 2 | 2 | 1 | Walker +7 |
| Gravis Marketing | 5/28 - 5/29 | 17 | 13 | 8 | 4 | 10 | 12 | 6 | 6 | -- | 4 | -- | 5 | -- | -- | Walker +4 |
| Quinnipiac | 4/25 - 5/4 | 21 | 13 | 11 | 13 | 5 | 7 | 12 | 2 | -- | 3 | 3 | 2 | 2 | 1 | Walker +8 |
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Polling Data
| Poll | Date | Walker | Rubio | Huckabee | Paul | Bush | Carson | Cruz | Santorum | Trump | Christie | Perry | Fiorina | Kasich | Jindal | Spread |
|---|
| RCP Average | 4/25 - 6/8 | 18.3 | 9.8 | 9.5 | 9.3 | 8.5 | 8.5 | 6.8 | 4.7 | 4.5 | 4.3 | 3.0 | 2.8 | 2.0 | 1.0 | Walker +8.5 |
| Morning Consult | 5/31 - 6/8 | 18 | 7 | 10 | 10 | 10 | 5 | 4 | -- | 5 | 6 | -- | 2 | -- | -- | Walker +8 |
| Des Moines Register | 5/25 - 5/29 | 17 | 6 | 9 | 10 | 9 | 10 | 5 | 6 | 4 | 4 | 3 | 2 | 2 | 1 | Walker +7 |
| Gravis Marketing | 5/28 - 5/29 | 17 | 13 | 8 | 4 | 10 | 12 | 6 | 6 | -- | 4 | -- | 5 | -- | -- | Walker +4 |
| Quinnipiac | 4/25 - 5/4 | 21 | 13 | 11 | 13 | 5 | 7 | 12 | 2 | -- | 3 | 3 | 2 | 2 | 1 | Walker +8 |
| PPP (D) | 4/23 - 4/26 | 23 | 13 | 10 | 10 | 12 | 7 | 8 | -- | -- | 5 | 4 | -- | -- | -- | Walker +10 |
| Loras College | 4/21 - 4/23 | 13 | 10 | 9 | 6 | 10 | 6 | 7 | 4 | 3 | 5 | 3 | 1 | 1 | 1 | Walker +3 |
| Gravis Marketing | 4/13 - 4/13 | 13 | 12 | 8 | 9 | 16 | 9 | 6 | 2 | -- | 5 | -- | 3 | -- | -- | Bush +3 |
| Quinnipiac | 2/16 - 2/23 | 25 | 4 | 11 | 13 | 10 | 11 | 5 | 4 | -- | 4 | 3 | -- | 0 | 2 | Walker +12 |
| Gravis Marketing | 2/12 - 2/13 | 24 | 7 | 7 | 10 | 10 | 5 | 4 | 6 | -- | 9 | -- | 3 | -- | -- | Walker +14 |
| NBC News/Marist | 2/3 - 2/10 | 15 | 6 | 17 | 7 | 16 | 6 | 2 | 5 | -- | 9 | 4 | -- | -- | -- | Huckabee +1 |
| DMR/Bloomberg | 1/26 - 1/29 | 16 | 4 | 13 | 15 | 9 | 10 | 6 | 5 | 1 | 6 | 3 | 1 | 1 | 2 | Walker +1 |
| Loras College | 1/21 - 1/26 | 10 | 4 | 14 | 7 | 13 | 13 | 5 | 4 | -- | 5 | 3 | 1 | 1 | 2 | Huckabee +1 |
| FOX News | 10/28 - 10/30 | 5 | 5 | 13 | 8 | 8 | 12 | 7 | 6 | -- | 7 | 3 | -- | 1 | 1 | Huckabee +1 |
| CNN/ORC | 9/8 - 9/10 | 5 | 5 | 21 | 7 | 6 | -- | 4 | 3 | -- | 6 | 5 | -- | -- | 4 | Huckabee +14 |
| USAT/Suffolk | 8/23 - 8/26 | 4 | 5 | 13 | 7 | 7 | -- | 5 | 6 | -- | 11 | 8 | -- | 1 | 3 | Huckabee +2 |
| NBC News/Marist | 7/7 - 7/13 | 5 | 7 | -- | 12 | 12 | -- | 7 | 9 | -- | 8 | 7 | -- | -- | 1 | Tie |
| PPP (D) | 5/15 - 5/19 | 6 | 4 | 20 | 10 | 12 | -- | 15 | 3 | -- | 9 | -- | -- | -- | -- | Huckabee +5 |
| Vox Populi/DC (R) | 4/22 - 4/24 | 6 | 9 | 20 | 8 | 18 | -- | 9 | -- | -- | 7 | -- | -- | -- | -- | Huckabee +2 |
| Magellan (R) | 4/14 - 4/15 | 8 | 2 | 17 | 11 | 17 | -- | 10 | -- | -- | 14 | -- | -- | 5 | -- | Tie |
| Loras College | 4/7 - 4/8 | 5 | 5 | 15 | 9 | 11 | -- | 6 | 5 | -- | 8 | 3 | -- | 1 | -- | Huckabee +4 |
| Suffolk* | 4/3 - 4/8 | 6 | 6 | 11 | 10 | 10 | 9 | 9 | 6 | -- | 7 | 3 | -- | -- | 3 | Huckabee +1 |
| WPA Research (R) | 3/30 - 3/30 | 8 | 3 | 14 | 10 | 7 | -- | 7 | 5 | -- | 6 | 3 | -- | -- | 2 | Huckabee +4 |
| PPP (D) | 2/20 - 2/23 | 7 | 3 | 17 | 14 | 13 | -- | 10 | -- | -- | 10 | -- | -- | -- | 7 | Huckabee +3 |
| PPP (D) | 7/5 - 7/7 | -- | 11 | -- | 18 | 14 | -- | 10 | 6 | -- | 16 | -- | -- | -- | 2 | Paul +2 |
| Harper (R) | 11/23 - 11/24 | 7 | 6 | -- | 13 | -- | -- | 16 | 11 | -- | 17 | -- | -- | -- | 3 | Christie +1 |
| PPP (D) | 2/1 - 2/3 | -- | 16 | 16 | 15 | 14 | -- | -- | -- | -- | 12 | 3 | -- | -- | 3 | Tie |
| Harper (R) | 1/29 - 1/29 | 3 | 27 | -- | 13 | -- | -- | -- | 14 | -- | 12 | -- | -- | -- | -- | Rubio +13 |
| PPP (D) | 7/12 - 7/15 | 4 | 10 | 17 | 11 | 8 | -- | -- | 17 | -- | 16 | -- | -- | -- | -- | Tie |
| PPP (D) | 5/3 - 5/6 | -- | 7 | 16 | 9 | 10 | -- | -- | 16 | -- | 15 | -- | -- | -- | -- | Tie |