Conducted September 21, 2010
By Rasmussen Reports
15% Somewhat approve
6% Somewhat disapprove
47% Strongly disapprove
1% Not sure
38% Somewhat approve
28% Somewhat disapprove
15% Strongly disapprove
3% Not sure
| | Roy Blunt (R) | Robin Carnahan (D) | Some other candidate | Not sure |
| September 21, 2010 | 52% | 44% | 2% | 3% |
| September 7, 2010 | 53% | 43% | 2% | 2% |
| August 23, 2010 | 51% | 40% | 5% | 4% |
| August 10, 2010 | 50% | 43% | 3% | 4% |
| July 27, 2010 | 49% | 43% | 4% | 4% |
| July 13, 2010 | 47% | 45% | 2% | 6% |
| June 28, 2010 | 48% | 43% | 3% | 6% |
| June 2, 2010 | 45% | 44% | 4% | 6% |
| May 3, 2010 | 50% | 42% | 4% | 4% |
| Mar 9, 2010 | 47% | 41% | 4% | 8% |
| Feb 10, 2010 | 49% | 42% | 3% | 6% |
| Jan 19, 2010 | 49% | 43% | 3% | 5% |
| Dec 15, 2009 | 44% | 46% | 4% | 6% |
| Sep 21, 2009 | 46% | 46% | 2% | 5% |
| Candidate for the MO Senate Race | Very Favorable | Somewhat Favorable | Somewhat Unfavorable | Very Unfavorable | Not sure |
| Blunt | 19% | 34% | 14% | 28% | 5% |
| Carnahan | 24% | 21% | 19% | 33% | 3% |
54% Strongly favor
10% Somewhat favor
6% Somewhat oppose
23% Strongly oppose
6% Not sure
23% Bad
16% No impact
14% Not sure
13% Oppose
16% Not sure
39% Oppose
18% Not sure
16% Increasing government spending
19% Not sure
| Issue | Republicans | Democrats | Not sure |
| Economy | 53% | 39% | 9% |
| Government Ethics & Corruption | 42% | 36% | 22% |
| Health Care | 50% | 36% | 14% |



