Will the Minnesota 2026 Senate race be within 5%?

Analysis

The stronger signals — unanimous 'Likely D' ratings, a Pollsmax model at D+7.2, and a strongly Democratic midterm environment (which historically widens D margins in blue-lean states, e.g., 2018 Smith +10.6) — center the expected margin around D+7-9. A normal distribution centered ~D+7 with sd ~5.5 gives P(margin ≤5) ≈ 30-35%. Offsets to that (open seat, third-party compression under all-valid-votes denominator, MN's 2024 presidential margin of only +4.2) keep me at the upper end, ~34%.

Key Evidence

All four raters are 'Likely D'; Pollsmax models D+7.2; national environment is a D wave (Trump net -16, generic D+7). Best analogs (2018 Smith +10.6 open-ish special, Klobuchar +24 in a D wave) suggest a central margin of D+7-9, yielding P(≤5) ≈ 30-35%.

Risks

It's Nov 2026 and the race finished D+3 — a YES trade we skipped would have won because the sparse July polling average (D+3.5) was actually right, Tafoya's celebrity name recognition kept the race tight, and third-party candidates compressed the top-two gap under the all-valid-votes denominator.

Update — 2026-08-19 05:19 UTC

Updated probability: 33%. Reassessed following updated evidence.

The Minnesota Senate race features Democratic nominee Peggy Flanagan against Republican Michele Tafoya, following a primary where Flanagan secured 59% of the vote. Historical election data and proprietary signals suggest that while Minnesota has trended Democratic in recent statewide contests, the margin of victory remains sensitive to shifts in voter turnout and the specific dynamics of the general election campaign.