No track record in the 1998–2022 results data yet, so it isn't graded. Crosstab grades every 2026 pollster on its own results after Election Day.
4 polls this cycle; its polls have been 2.7 points more Democratic than other polls of the same races (raw gap D+6.3, adjusted for its 3 polls).
| Date | Poll | Result | vs. other polls |
|---|---|---|---|
| 08-01 | Maine Senate | Jackson 49, Collins 45 | D+1.4 |
| 02-17 | Nevada Governor | Ford 43, Lombardo 46 | |
| 09-22 | Ohio Senate | Brown 48, Husted 45 | D+9 |
| 09-22 | Ohio Governor | Acton 46, Ramaswamy 45 | D+8.3 |
States polled: Maine, Nevada, Ohio.
Open Hart Research in the interactive Trust Index All pollster ratings
Hart Research has no track record in the 1998–2022 results data, so it isn't graded yet. Crosstab will grade every 2026 pollster on its own results after Election Day.
In 2026, Hart Research's polls have been 2.7 points more Democratic than other polls of the same races.
4 polls in Crosstab's data, including Maine Senate, Nevada Governor, Ohio Senate, Ohio Governor.
Grades: Crosstab Trust Index, computed from FiveThirtyEight's pollster-ratings data (CC BY 4.0), 1998–2022; 2026 measures from Crosstab's polling data.
Updated 2026-10-04 · Crosstab, nonpartisan polling analysis.