| Poll source | Date(s)
administered | Sample
size | Margin of
error | Mark
Herring (D) | John
Adams (R) | Other | Undecided |
|---|
| Change Research [71] | November 2–5, 2017 | 3,648 | ± 1.6% | 51% | 45% | — | 4% |
| The Polling Company (R) [72] | November 2–5, 2017 | 800 | ± 3.5% | 44% | 45% | — | 9% |
| Christopher Newport University [73] | October 29 – November 4, 2017 | 839 | ± 3.5% | 49% | 45% | — | 6% |
| Gravis Marketing [74] | October 30 – November 3, 2017 | 1,143 | ± 2.9% | 48% | 42% | — | 10% |
| The Polling Company (R) [75] | October 30 – November 2, 2017 | 800 | ± 3.5% | 42% | 43% | — | 12% |
| Roanoke College [76] | October 29 – November 2, 2017 | 781 | ± 3.5% | 46% | 46% | — | 8% |
| Suffolk University [77] | October 30 – November 1, 2017 | 500 | ± 4.4% | 44% | 42% | — | 13% |
| Washington Post/Schar School [78] | October 26–29, 2017 | 921 | ± 4.0% | 51% | 43% | — | 5% |
| The Polling Company (R) [79] | October 23–26, 2017 | 800 | ± 3.5% | 43% | 43% | — | 11% |
| Christopher Newport University [80] | October 20–25, 2017 | 812 | ± 3.8% | 49% | 44% | — | 7% |
| Roanoke College [81] | October 8–13, 2017 | 607 | ± 4.0% | 47% | 42% | — | 10% |
| Christopher Newport University [82] | October 2–6, 2017 | 928 | ± 4.3% | 51% | 40% | — | 9% |
| Washington Post/Schar School Poll [83] | September 28 – October 2, 2017 | 720 LV | ± 4.5% | 52% | 41% | — | 5% |
| 1,000 RV | ± 3.5% | 50% | 39% | — | 6% |
| Public Policy Polling [84] | September 21–23, 2017 | 849 | ± 3.8% | 46% | 38% | — | 16% |
| Christopher Newport University [85] | September 12–22, 2017 | 776 | ± 3.7% | 47% | 42% | — | 11% |
| Suffolk University [86] | September 13–17, 2017 | 500 | ± 4.4% | 39% | 37% | — | 23% |
| Mason-Dixon [87] | September 10–15, 2017 | 625 | ± 4.0% | 45% | 36% | — | 19% |
| University of Mary Washington [88] | September 5–12, 2017 | 562 LV | ± 5.2% | 47% | 40% | — | 10% |
| 867 RV | ± 4.1% | 47% | 38% | — | 12% |
| Virginia Commonwealth University [89] | July 17–25, 2017 | 538 LV | ± 5.1% | 45% | 39% | — | 15% |
| 707 RV | ± 4.5% | 43% | 36% | — | 17% |
