Election forecasts you can inspect.Tested models, shown with their sources and their uncertainty.

Updated October 22, 2026, 09:28 UTC

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New Hampshire House District Strafford 21

2026 forecast · Updated October 22, 2026, 09:28 UTC

>99% chance of a Democratic win · Seth Miller (D), Joseph D. Morganella (R), Geoffrey Smith (D), Alice Wade (D)

New Hampshire House District Strafford 21: Elects 3: expected Democratic seats 3.0Maine House 150: chance of a Democratic win 99%; 2024 president D+22New Hampshire House Rockingham 21: chance of a Democratic win >99%; 2024 president D+35New Hampshire House Rockingham 37: chance of a Democratic win >99%; 2024 president D+43New Hampshire House Strafford 10: chance of a Democratic win >99%; 2024 president D+45New Hampshire House Strafford 11: chance of a Democratic win >99%; 2024 president D+29New Hampshire House Strafford 12: chance of a Democratic win 98%; 2024 president D+12New Hampshire House Strafford 13: chance of a Democratic win 94%; 2024 president D+19New Hampshire House Strafford 14: chance of a Democratic win >99%; 2024 president D+46New Hampshire House Strafford 15: chance of a Democratic win >99%; 2024 president D+42New Hampshire House Strafford 16: chance of a Democratic win >99%; 2024 president D+25New Hampshire House Strafford 17: chance of a Democratic win >99%; 2024 president D+28New Hampshire House Strafford 18: chance of a Democratic win 7%; 2024 president R+10New Hampshire House Strafford 19: chance of a Democratic win 53%; 2024 president R+2New Hampshire House Strafford 20: chance of a Democratic win >99%; 2024 president D+37New Hampshire House Strafford 4: chance of a Democratic win 61%; 2024 president D+1New Hampshire House Strafford 7: chance of a Democratic win 29%; 2024 president R+9New Hampshire House District Strafford 21: Elects 3: expected Democratic seats 3.0Rockingham 37Strafford 19Strafford 20Strafford 4Strafford 21
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District Strafford 21 is safe Democratic. Of its 16 neighbouring districts, 12 favour Democrats, 2 favour Republicans, 2 are competitive. 1 of them is across the state line.

StatusElects 3: expected Democratic seats 3.0
Chance of a Democratic win>99%
Likely margin (80% range)D+22 to D+44, middle D+33
CandidatesSeth Miller (D), Joseph D. Morganella (R), Geoffrey Smith (D), Alice Wade (D)
Candidate list fromcivic guide

How it has voted

On its current lines. Legislative contests and the top-of-ticket vote inside the district.

Legislature 2024D+28
President 2024D+32
← RepublicanDemocratic →

Initial version. This model was tested on every state legislative election from 1994 to 2024 before publication, forecasting each as if it had not happened. It beat the simple rule “the party that holds the seat keeps it”, and its chamber seat counts were off by 2.9 seats on average (target: under 3). Districts with no two-party race last time are read from their own presidential vote, a change tested in advance that cut their average error from 17 to 13 points. It missed one of its five accuracy targets: in 2024, the calmest year on record, its ranges were wider than they needed to be (92% of results fell inside its 80% ranges; target: at most 88%). Treat the ranges as cautious. The full test record and code.