Polling
| Source | Date | Cantwell (D) | McGavick (R) |
|---|---|---|---|
| Strategic Vision (R) | November 6, 2006 | 53% | 42% |
| Mason-Dixon/MSNBC | November 5, 2006 | 54% | 38% |
| Zogby/WSJ | October 31, 2006 | 50% | 46% |
| Rasmussen | October 30, 2006 | 54% | 42% |
| Mason-Dixon/MSNBC | October 24, 2006 | 52% | 37% |
| Strategic Vision (R) | October 20, 2006 | 51% | 42% |
| Rasmussen | October 17, 2006 | 53% | 38% |
| Zogby/WSJ | October 16, 2006 | 52% | 45% |
| Mason-Dixon/MSNBC | October 2, 2006 | 50% | 40% |
| Elway | October 1, 2006 | 53% | 35% |
| Strategic Vision (R) | September 28, 2006 | 49% | 40% |
| Zogby/WSJ | September 28, 2006 | 50% | 43% |
| Rasmussen | September 20, 2006 | 48% | 42% |
| Rasmussen | September 12, 2006 | 52% | 35% |
| Zogby/WSJ | September 11, 2006 | 50% | 42% |
| Strategic Vision (R) | August 29, 2006 | 48% | 43% |
| Zogby/WSJ | August 28, 2006 | 51% | 43% |
| Rasmussen | August 24, 2006 | 46% | 40% |
| Strategic Vision (R) | July 26, 2006 | 48% | 44% |
| Zogby/WSJ | July 24, 2006 | 49% | 42% |
| Elway | July 22, 2006 | 47% | 33% |
| Rasmussen | July 17, 2006 | 48% | 37% |
| Strategic Vision (R) | June 30, 2006 | 47% | 43% |
| Zogby/WSJ | June 21, 2006 | 48% | 43% |
| Rasmussen | June 19, 2006 | 44% | 40% |
| Strategic Vision (R) | May 24, 2006 | 47% | 42% |
| Rasmussen | May 16, 2006 | 46% | 41% |
| Elway | May 5, 2006 | 52% | 23% |
| Strategic Vision (R) | April 26, 2006 | 48% | 40% |
| Rasmussen | April 13, 2006 | 48% | 40% |
| Strategic Vision (R) | March 31, 2006 | 49% | 39% |
| Zogby/WSJ | March 31, 2006 | 49% | 42% |
| Rasmussen | March 20, 2006 | 49% | 36% |
| Strategic Vision (R) | February 15, 2006 | 48% | 40% |
| Rasmussen | February 12, 2006 | 50% | 36% |
| Elway | February 9, 2006 | 55% | 25% |
| Rasmussen | January 5, 2006 | 51% | 36% |
| Strategic Vision (R) | December 7, 2005 | 50% | 39% |
| Rasmussen | December 5, 2005 | 52% | 37% |
| Rasmussen | November 10, 2005 | 52% | 37% |
| Strategic Vision (R) | October 27, 2005 | 48% | 39% |
| Zogby/WSJ | September 29, 2005 | 49% | 39% |
| Strategic Vision (R) | September 2005 | 49% | 39% |
| Strategic Vision (R) | August 2005 | 46% | 38% |
Read more about this topic: United States Senate Election In Washington, 2006, General Election