136 distinct public polls with a last field date between September 19 and October 18, 2026, covering 19 of the 22 states with a Senate race; no poll in that window was found for Kentucky, West Virginia or Colorado. Numbers are published poll shares, not a weighted average or a forecast.
| State | Pollster | Field end | Sample | Dem / Ind-backed | % | Republican | % | Margin | Source |
|---|
Method: news coverage of the 2026 U.S. Senate general elections in 22 states, searched since September 25, 2026; every reported poll extracted and copies of one poll (same state, pollster, last field date) merged — 136 distinct polls with a last field date September 19 – October 18, 2026, in 19 states; no qualifying poll found for Kentucky, West Virginia or Colorado. Margin = Democratic or independent-backed candidate minus Republican, percentage points; state averages are simple unweighted means of the polls found, not a weighted polling average or forecast. Where reprints disagreed on a poll's shares, one published value is shown. Non-leading candidates and undecideds cut for space.