United States Senate election in California, 2010
Polling
Columns: Poll source | Date(s) administered | Sample size | Margin of Error | Tom Campbell | Carly Fiorina | Chuck DeVore | Other | Unde- cided
Survey USA (report) | June 3–6, 2010 | 569 | ±4.2% | 22% | 48% | 16% | 9% | 9% | Los Angeles Times (report) | May 19–26, 2010 | 1506 | ±2.6% | 23% | 38% | 16% | 23% | 23% | Survey USA (report) | May 21–23, 2010 | 612 | ±4.3% | 23% | 46% | 14% | 6% | 11% | Public Policy Polling (report) | May 21–23, 2010 | 417 | ±4.8% | 21% | 41% | 16% | — | 18% | PPIC (report) | May 9–16, 2010 | 1168 | ±3.0% | 23% | 25% | 16% | — | 36% | Research 2000 (report) | May 17–19, 2010 | 400 | ±5.0% | 37% | 22% | 14% | — | 27% | Survey USA (report) | May 6–9, 2010 | 548 | ±4.3% | 35% | 24% | 15% | 3% | 23% | Survey USA (report) | April 19–21, 2010 | 538 | ±4.3% | 34% | 27% | 14% | 3% | 23% | Los Angeles Times (report) | March 23–30, 2010 | 1515 | ±2.6% | 29% | 25% | 9% | 4% | 33% | PPIC (report) | March 24, 2010 | 2002 | ±2.0% | 23% | 24% | 8% | 1% | 44% | Research 2000 (report) | March 10, 2010 | 400 | ±5.0% | 33% | 24% | 7% | — | 36% | M4 Strategies (report) | February 26, 2010 | 427 | — | 32% | 19% | 11% | — | 39% | PPIC (report) | January 27, 2010 | 2001 | ±2.0% | 27% | 16% | 8% | 1% | 48% | The Field Poll (report) | January 5–17, 2010 | 202 | ±7.1% | 30% | 25% | 6% | — | 39% | Los Angeles Times (report) | Oct. 27–November 3, 2009 | 499 | — | — | 27% | 27% | 2% | 40% | The Field Poll (report) | Sept. 18–October 6, 2009 | 373 | ±4.5% | — | 21% | 20% | — | 59% | The Field Poll (report) | Feb. 20–March 1, 2009 | 298 | ±3.6% | — | 31% | 19% | — | 36%