U.S. Senate

VOTE-SCOPE FORECAST · PROPRIETARY PROJECTION · EXCLUSIVE ADJUSTMENTS

Latest run: 2026-09-16 326 polls aggregated 50,000 simulations
Model Harfang des neiges us_senate_2026
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RACE BOARD · RUN 2026-09-16

Democratic have the map. The market sees a much tighter chamber.

51Democratic · seats
72%Democratic · finishes first
49Republican · seats
53%Democrats · Polymarket →

326 polls · 50,000 simulations · our exclusive read of the race

Watch list

The tightest races

Smallest projected margin. Open one for the numbers.

  1. AlaskaRepublican71 %2.3 pt margin
  2. IowaRepublican53 %2.7 pt margin
  3. TexasDemocrat66 %3.2 pt margin

Current Senate Composition

51 seats for a majority
  • Republican 53
  • Democratic 47

Seat projection

51 seats for a majority
Democratic
51
Vote
P(majority)
62%
P(largest)
72%
Republican
49
Vote
P(majority)
10%
P(largest)
15%

Analysis

Vote intention

Raw polls (dots) and model estimate (diamonds) with 95% confidence interval.

Scenario probabilities

Probability of winning a majority or finishing strictly first, across the 50,000 Monte Carlo simulations.

Riding map

All ridings

35 / 35 ridings
Detailed projection by electoral district
RidingProv.ProjectionVote%MarginP(win)vs 2024
AlaskaAKRepublican50.5%2.3%71%Hold
IowaIARepublican49.9%2.7%53%Hold
TexasTXDemocratic50.5%3.2%66%Republican → Democratic
MaineMEDemocratic50.8%3.5%68%Republican → Democratic
OhioOHDemocratic50.9%4.4%76%Republican → Democratic
KansasKSRepublican52.1%4.7%97%Hold
MinnesotaMNDemocratic51.4%4.8%97%Hold
MichiganMIDemocratic51.7%5.0%78%Hold
South CarolinaSCRepublican51.6%5.3%75%Hold
FloridaFLRepublican52.5%5.7%92%Hold
New HampshireNHDemocratic52.5%6.8%87%Hold
North CarolinaNCDemocratic53.3%7.3%92%Republican → Democratic
GeorgiaGADemocratic53.6%8.8%93%Hold
MississippiMSRepublican53.4%8.8%82%Hold
NebraskaNERepublican54.4%9.2%99%Hold
MontanaMTRepublican42.9%10.2%85%Hold
South DakotaSDRepublican45.7%10.5%62%Hold
VirginiaVADemocratic56.2%12.9%98%Hold
KentuckyKYRepublican56.3%13.0%100%Hold
New MexicoNMDemocratic56.9%14.2%99%Hold
AlabamaALRepublican57.6%15.5%99%Hold
ColoradoCODemocratic57.1%16.5%99%Hold
IdahoIDRepublican49.3%17.6%92%Hold
LouisianaLARepublican59.0%21.6%100%Hold
IllinoisILDemocratic58.5%23.2%100%Hold
New JerseyNJDemocratic60.8%23.4%100%Hold
TennesseeTNRepublican59.4%23.7%100%Hold
MassachusettsMADemocratic61.7%23.8%100%Hold
OklahomaOKRepublican57.9%23.8%100%Hold
OregonORDemocratic60.5%24.7%100%Hold
ArkansasARRepublican62.8%26.0%100%Hold
Rhode IslandRIDemocratic61.5%26.7%100%Hold
DelawareDEDemocratic63.0%28.6%100%Hold
West VirginiaWVRepublican68.1%38.9%100%Hold
WyomingWYRepublican69.0%40.7%100%Hold

The race question

Is the Senate map competitive enough to overcome its structural tilt?

Senate control is decided in a handful of states, not a national vote. A modest national shift barely moves the map; recruitment, incumbency and late money in the closest races move it far more.

How we got here

How we got here

Senate control is never a national popular-vote contest: only the seats scheduled in this class are exposed. That makes geography and incumbency the first layer of the story.

Probabilities describe the range of plausible chamber outcomes; they do not erase distinct state coalitions.

What just changed

What just changed

LATEST REVIEW

The map before the wave

We read polls, recruitment and spending state by state before interpreting any national swing — only the seats in this class are exposed, so geography moves the chamber more than the topline. The live tables above show the current run.

Our read: Watch item — not automatically treated as a model input.

What can still change the race

What can still change the race

  1. Recruitment and primary outcomes in the closest states.
  2. Whether presidential approval moves consistently across several weeks.
  3. Spending decisions that reveal where both parties see real opportunity.

Senate 2026 — party control

Live odds via Polymarket

Seat profile

Dive into a specific Senate race

Projection, baseline result, race rating, nearby competitive seats — for each of the 35 contested 2026 Senate races (33 regular Class III + 2 specials).

Browse all 35 races →

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