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Each poll as published, with its pollster, fieldwork dates, sample size and a link to the source.

How to read a poll

Sample size is how many people were asked. More people means less random error, never none.
±3 is the margin of error: the real figure is likely within 3 points either way of the one shown.
Two polls can differ because they were taken on different dates, with different methods and different samples.
est. means the institute did not publish a margin of error, so it is estimated from the sample size.
The average smooths this out: it combines recent polls, so one unusual poll cannot swing the picture.

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Polls with institute, dates, sample, margin of error, methodology and results
Institute	Date	Fieldwork	Sample	MoE	Method	Voting intention	Source
Tavern Research (D) 🇺🇸 United States · 2026 Michigan Senate Democratic primary	29 Jul 2026	26 Jul 2026 – 27 Jul 2026	914	±3.2 est. (Not published: estimated from sample size (95%, simple random sample))	—	El-Sayed (D) 46.0% Stevens (D) 36.0% McMorrow (D) 4.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Montana	27 Jul 2026	23 Jul 2026 – 27 Jul 2026	517	±4.3 est. (Not published: estimated from sample size (95%, simple random sample))	—	Alme (R) 49.0% Bodnar (I) 25.0% Bankhead (D) 24.0% Austin (L) 2.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 Rhode Island gubernatorial Democratic primary	22 Jul 2026	10 Jul 2026 – 14 Jul 2026	777	±3.5 est. (Not published: estimated from sample size (95%, simple random sample))	—	Foulkes (D) 39.0% McKee (D) 33.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 Michigan Senate Democratic primary	8 Jul 2026*	6 Jul 2026 – 8 Jul 2026	2,211	±2.1 est. (Not published: estimated from sample size (95%, simple random sample))	—	El-Sayed (D) 41.0% Stevens (D) 38.0% McMorrow (D) 5.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Maine	6 Jul 2026	3 Jul 2026 – 6 Jul 2026	1,074	±3.0 est. (Not published: estimated from sample size (95%, simple random sample))	—	Platner (D) 52.0% Collins (R) 48.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 Colorado gubernatorial Democratic primary	27 Jun 2026	31 May 2026 – 1 Jun 2026	—	—	—	Bennet (D) 35.0% Weiser (D) 28.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Maine	8 Jun 2026	5 Jun 2026 – 8 Jun 2026	1,642	±2.4 est. (Not published: estimated from sample size (95%, simple random sample))	—	Platner (D) 51.0% Collins (R) 49.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 Maine Senate Democratic primary	8 Jun 2026	5 Jun 2026 – 5 Jun 2026	704	±3.7 est. (Not published: estimated from sample size (95%, simple random sample))	—	Platner (D) 68.0% Mills (D) 16.0% Costello (D) 5.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Montana	19 May 2026	13 May 2026 – 18 May 2026	607	±4.0 est. (Not published: estimated from sample size (95%, simple random sample))	—	Alme (R) 50.0% Bodnar (I) 50.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Nebraska	11 May 2026	8 May 2026 – 11 May 2026	1,165	±2.9 est. (Not published: estimated from sample size (95%, simple random sample))	—	Osborn (I) 47.0% Ricketts (R) 42.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States Senate election in Kansas	17 Apr 2026	26 Jan 2026 – 28 Jan 2026	1,013	±3.1 est. (Not published: estimated from sample size (95%, simple random sample))	—	Marshall (R) 54.0% Hamilton (D) 46.0%	Source for Tavern Research (D) poll (opens in a new tab)
Tavern Research (D) 🇺🇸 United States · 2026 United States House of Representatives elections	10 Apr 2026	6 Apr 2026 – 9 Apr 2026	502	±4.4 est. (Not published: estimated from sample size (95%, simple random sample))	—	DEM 44.0% GOP 43.0%	Source for Tavern Research (D) poll (opens in a new tab)

* End of fieldwork: the source states no publication date.

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