| Poll source | Date(s) administered | Sample size | Margin of error | Phrasing | Support | Oppose | Unsure |
| Berkeley IGS | October 20–27, 2025 | 4,946 (LV) | ± 2% | "The special election includes a statewide ballot measure about redistricting, Proposition 50. The following is a summary of Proposition 50 exactly as it appeared on the election ballot. ... (How did)/(If you were voting today, how would) you vote on Proposition 50?" | 60% | 38% | 2% |
| 8,141 (RV) | 54% | 33% | 13% |
| Emerson College | October 20–21, 2025 | 900 (LV) | ± 3 % | "On November 4, 2025, there will be an election for Proposition 50, which Authorizes Temporary Changes to Congressional District Maps in Response to Texas' Partisan Redistricting. If the election for Proposition 50 were held today, would you vote yes (support) or no (oppose)?" | 57% | 37% | 6% |
| 60% | 40% | – |
| CBS News/YouGov | October 16–21, 2025 | 1,497 (LV) | ± 3 % | "If the election were held today, how would you vote on Proposition 50, which 'authorizes temporary changes to congressional district maps in response to Texas' partisan redistricting'?" | 62% | 38% | – |
| Public Policy Institute of California | October 7–14, 2025 | 943 (LV) | ± 4 % | "If the election were held today, would you vote yes or no on Proposition 50?" | 56% | 43% | 1% |
| co/efficient (R) | September 29 – October 1, 2025 | 976 (LV) | ± 3 % | "Do you support or oppose California's constitutional amendment known as Proposition 50?" | 54% | 36% | 10% |
| "Proposition 50 authorizes temporary changes to congressional district maps in response to Texas' partisan redistricting. This constitutional amendment requires temporary use of new congressional district maps through 2030, directs the independent Citizens Redistricting Commission to resume enacting congressional district maps in 2031, establishes | 56% | 39% | 5% |
| Emerson College | September 15–16, 2025 | 1,000 (RV) | ± 3 % | "In November 2025, there will be an election for Proposition 50, which authorizes temporary changes to California's congressional district maps in response to Texas' partisan redistricting. If the election for Proposition 50 were held today, would you vote yes (support) or no (oppose)?" | 51% | 34% | 15% |
| Harper Polling (R) | August 25–27, 2025 | 600 (LV) | ± 4 % | Question phrasing not available, described as "testing the Proposition 50 language". | 54% | 29% | 17% |
| Berkeley IGS | August 11–17, 2025 | 4,950 (RV) | ± 1 % | "Suppose a statewide ballot measure to change the way California Congressional District lines are drawn was put before voters in a special election later this year. The measure would ask voters to allow the state to temporarily replace the Congressional district lines drawn by the state's independent citizens commission after the last census in 202 | 48% | 32% | 20% |
| David Binder Research (D) | August 10–14, 2025 | 1,000 (LV) | ± 3 % | Question phrasing not available, described in Axios as: "Proposition 50 allows new maps to be designed on a temporary basis, triggered by partisan action in other states such as Texas, and retains the independent redistricting commission". | 57% | 35% | 8% |
| Citrin Center/Possibility Lab/Politico | July 28 – August 12, 2025 | 1,445 (RV) | ± 2 % | "In both 2008 and 2010, California voters passed initiatives to give an Independent Citizens Redistricting Commission the power to draw the state's legislative and congressional districts, in order to reduce the influence of politicians. Governor Newsom has suggested returning congressional line drawing authority back to the Legislature, citing con | 36% | 64% | – |
| Emerson College | August 4–5, 2025 | 1,000 (RV) | ± 3 % | "Do you support or oppose the proposal to redraw California's congressional map ahead of the 2026 Midterm Elections?" | 33% | 25% | 42% |
