United States Senate election in California, 2010 General election Polling

| Poll_source | Dates_administered | Sample_size | Margin_of_error | Barbara_Boxer_D | Carly_Fiorina_R | Other | Undecided |
|---|---|---|---|---|---|---|---|
| Rasmussen Reports (report) | October 13, 2010 | 750 | ± 4.0% | 49% | 46% | 2% | 3% |
| Angus Reid Public Opinion (report) | October 6, 2010 | 501 | ± 4.5% | 55% | 39% | 6% | — |
| Rasmussen Reports (report) | October 3, 2010 | 750 | ± 4.0% | 49% | 45% | 2% | 5% |
| USC poll report | September 27, 2010 | 1003 | — | 39% | 34% | — | 23% |
| PPIC report | September 19–26, 2010 | 1104 | ± 3% | 42% | 35% | 6% | 17% |
| CNN/Time/Opinion Research Corporation (report) | September 24–28, 2010 | 786 | ± 3.5% | 52% | 43% | 3% | 2% |
| Survey USA (report) | September 19–21, 2010 | 610 | ± 4.0% | 49% | 43% | 6% | 2% |
| Rasmussen Reports (report) | September 20, 2010 | 750 | ± 4.0% | 47% | 43% | 4% | 6% |