United States Senate election in Pennsylvania, 2010
Polling
Columns: Poll source | Date(s) administered | Sample size | Margin of error | Joe Sestak (D) | Pat Toomey (R) | Other | Undecided
Research 2000 (report) | May 7, 2009 | 600 | ± 4.0% | 37% | 32% | –– | –– | Quinnipiac University (report) | May 20, 2009 | 1191 | ± 2.8% | 37% | 35% | 1% | 23% | Rasmussen Reports (report) | June 16, 2009 | 800 | ± 4.5% | 41% | 35% | 7% | 18% | Quinnipiac University (report) | July 19, 2009 | 1173 | ± 2.9% | 35% | 39% | 1% | 23% | Rasmussen Reports (report) | August 11, 2009 | 1000 | ± 3.0% | 35% | 43% | 5% | 18% | Research 2000 (report) | August 12, 2009 | 600 | ± 5.0% | 42% | 41% | –– | 17% | Quinnipiac University (report) | September 28, 2009 | 1100 | ± 3.0% | 35% | 38% | 1% | 25% | 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% | 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% | Research 2000 (report) | May 24–26, 2010 | 600 | ± 4.0% | 43% | 40% | –– | –– | Rasmussen Reports (report) | June 2, 2010 | 500 | ± 4.5% | 38% | 45% | 5% | 12% | Public Policy Polling (report) | June 19–21, 2010 | 609 | ± 4.0% | 41% | 41% | –– | 18% | Rasmussen Reports (report) | June 29, 2010 | 500 | ± 4.5% | 39% | 45% | 6% | 11% | Quinnipiac University (report) | July 6–11, 2010 | 1367 | ± 2.7% | 43% | 43% | 1% | 12% | Rasmussen Reports (report) | July 14, 2010 | 750 | ± 4.0% | 38% | 45% | 6% | 12% | Rasmussen Reports (report) | July 28, 2010 | 750 | ± 4.0% | 39% | 45% | 6% | 10% | Public Policy Polling (report) | August 14–16, 2010 | 585 | ± 4.1% | 36% | 45% | –– | 20% | Rasmussen Reports (report) | August 16, 2010 | 750 | ± 4.0% | 37% | 46% | 5% | 12% | Rasmussen Reports (report) | August 30, 2010 | 750 | ± 4.0% | 39% | 45% | 5% | 11% | Ipsos/Reuters (report) | August 31, 2010 | 407 | ± 4.0% | 37% | 47% | 2% | 15% | Rasmussen Reports (report) | September 13, 2010 | 750 | ± 4.0% | 41% | 49% | 2% | 8% | Pulse Opinion Research (report) | September 18, 2010 | 1000 | ± 3.0% | 40% | 48% | 4% | 8% | Quinnipiac University (report) | September 15–19, 2010 | 684 | ± 3.8% | 43% | 50% | –– | 7% | CNN/Time Opinion Research (report) | September 17–21, 2010 | 741 | ± 3.5% | 44% | 49% | 4% | 3% | Muhlenberg/Morning Call (report) | September 18–23, 2010 | 445 | ± 5.0% | 39% | 46% | –– | 14% | Suffolk University (report) | September 24–27, 2010 | 500 | ± 4.4% | 40% | 45% | –– | 13% | Rasmussen Reports (report) | September 29, 2010 | 750 | ± 4.0% | 40% | 49% | 4% | 7% | Rasmussen Reports (report) | October 12, 2010 | 750 | ± 4.0% | 39% | 49% | 2% | 10% | Quinnipiac University (report) | October 13–17, 2010 | 1046 | ± 3.0% | 46% | 48% | –– | 5% | Public Policy Polling (report) | October 17–18, 2010 | 718 | ± 3.7% | 46% | 45% | –– | 9% | Muhlenberg/Morning Call (report) | October 16–19, 2010 | 403 | ± 5.0% | 44% | 41% | 5% | 10% | Muhlenberg/Morning Call (report) | October 17–20, 2010 | 420 | ± 5.0% | 43% | 43% | 4% | 10% | Rasmussen Reports (report) | October 21, 2010 | 750 | ± 5.0% | 44% | 48% | 1% | 7% | Franklin & Marshall University (report) | October 18–24, 2010 | 720 | ± 5.0% | 36% | 43% | 2% | 19% | Muhlenberg/Morning Call (report) | October 21–24, 2010 | 437 | ± 5.0% | 42% | 47% | 2% | 9% | Ipsos/Reuters (report) | October 22–24, 2010 | 400 | ± 4.9% | 46% | 46% | 2% | 6% | Muhlenberg/Morning Call (report) | October 22–25, 2010 | 448 | ± 5.0% | 40% | 48% | 3% | 9% | CNN/Time/Opinion Research (report) | October 20–26, 2010 | 1517 | ± 2.5% | 45% | 49% | 3% | –– | Muhlenberg/Morning Call (report) | October 23–26, 2010 | 457 | ± 5.0% | 41% | 46% | 3% | 9% | Muhlenberg/Morning Call (report) | October 24–27, 2010 | 460 | ± 5.0% | 40% | 48% | 2% | 10% | Susquehanna Polling & Research (report) | October 24–27, 2010 | 800 | ± 3.46% | 44% | 46% | –– | 9% | 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%