| Poll source | Date(s)administered | Samplesize | Marginof error | JohnCornyn | KenPaxton | Other | Undecided |
| McLaughlin & Associates (R) | December 1–4, 2025 | 800 (LV) | ± 3.4% | 40% | 44% | – | 12% |
| Public Policy Polling (D) | December 1–2, 2025 | 527 (LV) | – | 34% | 44% | – | 22% |
| Ragnar Research Partners (R) | November 13–16, 2025 | 758 (LV) | ± 4.0% | 45% | 41% | – | 14% |
| Stratus Intelligence (R) | November 4–6, 2025 | 811 (LV) | ± 4.6% | 38% | 46% | – | 16% |
| Stratus Intelligence (R) | October 4–6, 2025 | – (V) | – | 43% | 46% | – | 11% |
| University of Houston/Texas Southern University | September 19 – October 1, 2025 | 576 (RV) | ± 4.1% | 44% | 43% | – | 13% |
| UT Tyler | September 17–24, 2025 | 493 (RV) | – | 39% | 37% | – | 23% |
| Ragnar Research Partners (R) | September 20–22, 2025 | – (V) | ± 3.6% | 39% | 39% | – | 22% |
| Stratus Intelligence (R) | September 14–16, 2025 | – (V) | – | 44% | 44% | – | 12% |
| Texas Public Opinion Research | August 27–29, 2025 | 320 (RV) | – | 32% | 26% | 13% | 29% |
| co/efficient (R) | August 25–27, 2025 | 818 (LV) | ± 3.4% | 36% | 39% | – | 25% |
| Stratus Intelligence (R) | August 24–26, 2025 | – (V) | – | 41% | 48% | – | 11% |
| Echelon Insights | August 21–24, 2025 | 515 (LV) | ± 4.5% | 37% | 42% | – | 21% |
| Emerson College | August 11–12, 2025 | 491 (RV) | ± 4.4% | 30% | 29% | 5% | 36% |
| Texas Southern University | August 6–12, 2025 | 1,500 (LV) | ± 2.5% | 39% | 44% | – | 17% |
| Stratus Intelligence (R) | August 4–6, 2025 | – (V) | – | 42% | 45% | – | 13% |
| Stratus Intelligence (R) | July 16–18, 2025 | – (V) | – | 36% | 47% | – | 17% |
| Pulse Decision Science (R) | June 17–22, 2025 | 806 (LV) | ± 3.5% | 38% | 57% | – | 5% |
| Stratus Intelligence (R) | June 8–10, 2025 | – (V) | – | 33% | 49% | – | 18% |
| UT Tyler | May 28 – June 7, 2025 | 538 (RV) | – | 34% | 44% | – | 22% |
| Stratus Intelligence (R) | June 6–8, 2025 | 600 (LV) | ± 4.0% | 33% | 49% | – | 18% |
| UpONE Insights (R) | May 27–28, 2025 | 600 (V) | ± 4.0% | 28% | 50% | – | 21% |
| YouGov/Texas Southern University | May 9–19, 2025 | 510 (LV) | ± 4.3% | 34% | 43% | – | 23% |
| Quantus Insights (R) | May 11–13, 2025 | 600 (RV) | ± 4.4% | 39% | 52% | – | 9% |
| American Opportunity Alliance (R) | April 29 – May 1, 2025 | 800 (LV) | ± 3.5% | 35% | 52% | – | 13% |
| The Tarrance Group (R) | April 27 – May 1, 2025 | – | – | 40% | 56% | – | – |
| Stratus Intelligence (R) | April 29–30, 2025 | – (V) | – | 33% | 48% | – | 19% |
| Stratus Intelligence (R) | April 15–17, 2025 | – (V) | – | 33% | 50% | – | 17% |
| Internal Republican Party poll | Mid–April 2025 | 605 (V) | – | 33% | 50% | – | 17% |
| Stratus Intelligence (R) | March 23–25, 2025 | – (V) | – | 35% | 52% | – | 13% |
| Lake Research Partners (D)/Slingshot Strategies (D) | March 7–10, 2025 | – (RV) | – | 27% | 38% | 19% | 16% |
| Fabrizio, Lee & Associates (R) | January 28 – February 2, 2025 | – (V) | – | 28% | 53% | – | 19% |
| Victory Insights (R) | January 4–6, 2025 | 600 (LV) | ± 4.0% | 34% | 42% | – | 25% |
| CWS Research (R) | July 9–10, 2022 | 1,918 (RV) | ± 2.2% | 31% | 51% | – | 18% |
