United States Senate election in Pennsylvania, 2010 General election Polling

| Poll_source | Dates_administered | Sample_size | Margin_of_error | Joe_Sestak_D | Pat_Toomey_R | Other | Undecided |
|---|---|---|---|---|---|---|---|
| Rasmussen Reports (report) | October 13, 2009 | 1000 | ± 3.0% | 38% | 37% | 6% | 19% |
| Rasmussen Reports (report) | December 8, 2009 | 1200 | ± 3.0% | 38% | 44% | 6% | 13% |
| Quinnipiac University (report) | December 8, 2009 | 1381 | ± 2.6% | 35% | 40% | 1% | 22% |
| Rasmussen Reports (report) | January 18, 2010 | 1000 | ± 3.0% | 35% | 43% | 6% | 16% |
| Rasmussen Reports (report) | February 8, 2010 | 1000 | ± 3.0% | 35% | 43% | 7% | 15% |
| Franklin & Marshall (Report) | February 15–21, 2010 | 954 | ± 2.9% | 20% | 38% | 3% | 39% |
| Quinnipiac University (report) | February 22–28, 2010 | 1452 | ± 2.6% | 36% | 39% | 1% | 24% |
| Research 2000 (report) | March 8–10, 2010 | 600 | ± 4.0% | 39% | 42% | –– | 19% |