Table:
text: 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
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%

text: 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
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%

text: 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
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%

text: 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%

text: 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
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%

text: 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) 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%

text: 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%

text: 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%

Question: Which candidate had an error rate of ±4.5% when Pat Toomey was 45% and Joe Sestak was 38% for the US Senate poll in the 2010 Pennsylvania general election?