2012 Presidential Election State Polls – Washington
| Poll | Sample | Date | Romney | Obama | Margin |
| 2012 Final Results | 11/6/2012 | 41.7 | 55.8 | +14.1 | |
| Average of Polls | Since 10/20/12 | 40.3 | 54.0 | +13.7 | |
| PPP (D) | 932 LV | 11/1-3/12 | 46 | 53 | +7 |
| Survey USA | 555 LV | 10/28-31/12 | 40 | 54 | +14 |
| The Washington Poll | 632 LV | 10/18-31/12 | 36 | 57 | +21 |
| Strategies 360 (D) | 500 LV | 10/17-20/12 | 39 | 52 | +13 |
| PPP (D) | 574 LV – Dem +6 | 10/15-16/12 | 45 | 50 | +5 |
| Rasmussen | 500 LV | 10/14/2012 | 42 | 55 | +13 |
| Survey USA | 543 LV | 10/12-14/12 | 40 | 54 | +14 |
| Rasmussen | 500 LV | 9/26/2012 | 41 | 52 | +11 |
| Gravis Marketing | 625 LV | 9/21-22/12 | 39 | 56 | +17 |
| Elway Poll | 9/9-12/12 | 36 | 53 | +17 | |
| Survey USA | 9/7-9/12 | 38 | 54 | +16 | |
| Moore Information | 8/6-7/12 | 36 | 46 | +10 | |
| Survey USA | 8/1-2/12 | 37 | 54 | +17 | |
| Survey USA | 7/16-18/12 | 37 | 46 | +9 | |
| PPP (D) | 6/14-17/12 | 41 | 54 | +13 | |
| Elway Poll | 6/13-16/12 | 41 | 49 | +8 | |
| Strategies 360 (D) | 5/22-24/12 | 40 | 51 | +11 | |
| Survey USA | 5/8-9-12 | 36 | 50 | +14 | |
| Public Policy Polling | 2/16-19/12 | 38 | 53 | +15 | |
| Elway Poll | 2/15/2012 | 38 | 49 | +11 | |
| Univ. of Washington | 10/10-30/11 | 41 | 50 | +9 | |
| Poll | Sample | Date | Romney | Obama | Margin |
