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 |
|---|---|---|---|---|---|---|---|
| Public Policy Polling (report) | October 29–31, 2010 | 882 | ± 3.3% | 50% | 46% | — | 3% |
| SurveyUSA (report) | October 26–31, 2010 | 587 | ± 4.1% | 46% | 38% | 6% | 10% |
| Angus Reid Public Opinion (report) | October 28–29, 2010 | 485 | ± 4.5% | 51% | 44% | 5% | — |
| Rasmussen Reports (report) | October 27, 2010 | 750 | ± 4.0% | 49% | 46% | 2% | 3% |
| CNN/Time/Opinion Research (report) | October 20–26, 2010 | 1527 | ± 2.5% | 50% | 45% | 1% | — |
| Field Poll (report) | October 14–26, 2010 | 1501 | ± 3.2% | 49% | 41% | — | 10% |
| SurveyUSA (report) | October 21–25, 2010 | 594 | ± 4.1% | 45% | 40% | 7% | 8% |