GeoOdds

New Hampshire U.S. Senate Race 2026 — Odds

NH · U.S. Senate · Class 2Lean DOpen seat
Incumbent:Open seat

Jeanne Shaheen's retirement after three terms opened a seat Democrats must defend, with Rep. Chris Pappas the clear frontrunner and former Sen. Scott Brown leading the Republican side. New Hampshire's federal elections have broken Democratic for a decade, and markets put the hold above 80 percent. Ratings remain a notch more cautious at Lean D, leaving room for a spread trade between forecasters and prices.

82%implied chance
-0.5pp24h

Favorite: Chris Pappas (D)

Current standings

  1. 1
    Chris Pappas (D)82%
  2. 2
    John E. Sununu (R)18%
  3. 3
    Person A
  4. 4
    Person C
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    Person E
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    Others (7 outcomes)<1%

Probability over time — Chris Pappas (D)

Frequently asked questions

Who is favored to win the New Hampshire Senate race in 2026?

Chris Pappas (D) leads on Polymarket at 82%. Forecasters rate the seat Lean D.

Is the New Hampshire senate seat open in 2026?

Yes. Incumbent Jeanne Shaheen (D) is not seeking re-election, making this an open seat. Jeanne Shaheen's retirement after three terms opened a seat Democrats must defend, with Rep. Chris Pappas the clear frontrunner and former Sen. Scott Brown leading the Republican side. New Hampshire's federal elections have broken Democratic for a decade, and markets put the hold above 80 percent. Ratings remain a notch more cautious at Lean D, leaving room for a spread trade between forecasters and prices.

Where can I trade the New Hampshire senate odds?

These markets trade on Polymarket — use the Polymarket link on this page to see the live order book. GeoOdds tracks and charts the probabilities but does not take bets. Trading involves risk; 18+ only.

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