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) | March 15, 2010 | 1000 | ± 3.0% | 37% | 42% | 7% | 15% |
| Franklin & Marshall (report) | March 15–21, 2010 | 1119 | ± 2.9% | 19% | 27% | 5% | 49% |
| Public Policy Polling (report) | March 29-April 1, 2010 | 934 | ± 3.2% | 36% | 42% | –– | 22% |
| Quinnipiac University (report) | March 30-April 5, 2010 | 1412 | ± 2.6% | 34% | 42% | 1% | 22% |
| Rasmussen Reports (report) | April 14, 2010 | 1000 | ± 3.0% | 36% | 47% | 5% | 12% |
| Rasmussen Reports (report) | May 6, 2010 | 1000 | ± 3.0% | 40% | 42% | 10% | 9% |
| Research 2000 (report) | May 14, 2010 | 600 | ± 4.0% | 40% | 45% | –– | 15% |
| Rasmussen Reports (report) | May 19, 2010 | 500 | ± 4.5% | 46% | 42% | 3% | 9% |