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 |
|---|---|---|---|---|---|---|---|
| Muhlenberg/Morning Call (report) | October 25–28, 2010 | 470 | ± 4.5% | 42% | 47% | 3% | 9% |
| Rasmussen Reports (report) | October 28, 2010 | 750 | ± 4.0% | 46% | 50% | 1% | 3% |
| Marist College (report) | October 26–28, 2010 | 806 | ± 3.5% | 45% | 52% | 1% | 2% |
| Muhlenberg/Morning Call (report) | October 26–29, 2010 | 480 | ± 4.5% | 43% | 45% | 2% | 10% |
| Quinnipiac University (report) | October 25–30, 2010 | 1244 | ± 2.8% | 45% | 50% | –– | 5% |
| Muhlenberg/Morning Call (report) | October 27–30, 2010 | 484 | ± 4.5% | 43% | 45% | 2% | 9% |
| Muhlenberg/Morning Call (report) | October 28–31, 2010 | 474 | ± 4.5% | 44% | 48% | –– | –– |
| Public Policy Polling (report) | October 30–31, 2010 | 772 | ± 3.5% | 46% | 51% | –– | 4% |