Thursday, October 15, 2026
B.C. votes in 9 days

Model vs markets

2026 midterms: our forecast vs Kalshi and Polymarket

A statistical model and two exchanges where people put money down, side by side, race by race. A comparison, not a ranking.

Who will control Congress?

Probability of a Democratic win. The dotted line is 50%.

Senate control (Democratic)

House control (Democratic)

Most governorships (Democratic)

  • Vote-Scope (ours) 60.9%
  • Kalshi 63.6%

Where we disagree most with the markets

Each row: our probability of a Democratic win (black dot) and the market’s (hatched dot). The longer the line, the bigger the disagreement.

  • CO-3House of Representatives 67.5% · Kalshi 29.7% We are more Democratic than Kalshi by 37.8 pts
  • AlaskaSenate 36.6% · Kalshi 74% We are more Republican than Kalshi by 37.4 pts
  • TX-15House of Representatives 50.6% · Kalshi 83.8% We are more Republican than Kalshi by 33.2 pts
  • AlaskaGovernors 54.7% · Kalshi 79% We are more Republican than Kalshi by 24.3 pts
  • AZ-2House of Representatives 48% · Kalshi 23.8% We are more Democratic than Kalshi by 24.2 pts
  • NC-11House of Representatives 53.1% · Kalshi 76.7% We are more Republican than Kalshi by 23.6 pts
  • FL-11House of Representatives 30.1% · Polymarket 8.5% We are more Democratic than Polymarket by 21.6 pts
  • VermontGovernors 2.7% · Kalshi 23.8% We are more Republican than Kalshi by 21.1 pts
  • South CarolinaSenate 34.6% · Kalshi 15% We are more Democratic than Kalshi by 19.6 pts
  • FL-16House of Representatives 36.4% · Polymarket 17% We are more Democratic than Polymarket by 19.4 pts
  • ME-2House of Representatives 55% · Kalshi 35.6% We are more Democratic than Kalshi by 19.4 pts
  • FL-13House of Representatives 43.6% · Kalshi 24.5% We are more Democratic than Kalshi by 19.1 pts

Every race with odds

Senate · 35
RaceVote-ScopeKalshiPolymarketGap
Alaska 36.6% 74% — −37.4
South Carolina 34.6% 15% 15.5% +19.6
Mississippi 29.2% 10.8% 9.5% +18.4
Montana 14.3% 0.4% 0.5% +13.9
Kansas 48.8% 35% 36.5% +13.8
Iowa 53.8% 42% 41.5% +11.8
Michigan 78.9% 69% 70.5% +9.9
Nebraska 9.6% 0.5% 0.1% +9.1
New Hampshire 95.7% 89% 88.5% +6.7
Arkansas 0.3% 6.4% 5.6% −6.1
Tennessee 0.7% 5% 4.2% −4.3
Ohio 63.9% 59.8% 61.5% +4.1
Texas 57.6% 61.4% 62.5% −3.8
Virginia 93.5% 97.3% 97.7% −3.8
Kentucky 7.2% 3.8% 3.3% +3.4
Massachusetts 99.8% 96.7% 98.4% +3.1
New Jersey 99.3% 96.3% 97.2% +3
Minnesota 84.2% 87% 87.5% −2.8
West Virginia 0.1% 2.1% 1.1% −2
Colorado 97% 98.7% 98.4% −1.7
Oregon 99.5% 97.8% 97.9% +1.7
Oklahoma 0.8% 2.5% 1.9% −1.7
North Carolina 92.9% 94.5% 95.8% −1.6
Maine 57.5% 56% 59.5% +1.5
Florida 10% 8.5% 9% +1.5
New Mexico 98.5% 97.3% 97.2% +1.2
Wyoming 0% 1.1% 1.4% −1.1
Delaware 99.8% 98.8% 97.4% +1
Georgia 94.1% 95.1% 96.2% −1
Illinois 97.7% 97.1% 98.2% +0.6
Louisiana 6.3% 6.9% 6.5% −0.6
Rhode Island 100% 99.4% 98.8% +0.6
Idaho 0.1% 0.6% 0.1% −0.5
South Dakota 0% 0.1% 0.1% −0.1
Alabama 2.7% 2.8% 1.9% −0.1
Governors · 36
RaceVote-ScopeKalshiPolymarketGap
Alaska 54.7% 79% — −24.3
Vermont 2.7% 23.8% 24.6% −21.1
Ohio 55.6% 71.6% 72% −16
Texas 33.2% 23.8% 22.5% +9.4
Oklahoma 0.6% 9.7% 8.5% −9.1
Iowa 80.9% 89.1% 89% −8.2
South Carolina 13.7% 5.9% 4.8% +7.8
Wisconsin 73.2% 80.2% 80.5% −7
Maine 98% 91.2% 95.3% +6.8
New Hampshire 11.7% — 5.5% +6.2
Arizona 94.3% 88.2% 88.5% +6.1
Tennessee 1.4% 6.9% 6.2% −5.5
Alabama 3.2% 8.3% 6% −5.1
Massachusetts 99.9% 94.9% 95.9% +5
New York 98.9% 93.9% 95% +5
Arkansas 5.7% 1.6% 2.2% +4.1
California 99.8% 96% — +3.8
Connecticut 99.5% 95.9% 96.8% +3.6
Maryland 99.9% 96.7% 97.8% +3.2
Hawaii 99.9% 97% 99.2% +2.9
Oregon 77.2% 74.3% 75.5% +2.9
Nebraska 6.6% 9.4% 9.5% −2.8
Illinois 98.4% 96.2% 97.9% +2.2
Michigan 91.1% 93.3% 94.5% −2.2
Idaho 0.3% 2.5% 2.1% −2.2
Wyoming 0% 2.1% 1.2% −2.1
Rhode Island 91.7% 93.6% 96.5% −1.9
Pennsylvania 99.9% 98.1% 98% +1.8
Nevada 55.8% 54% 52.5% +1.8
Georgia 46.3% 47.5% 50.5% −1.2
Minnesota 93.3% 94.5% 95.5% −1.2
Kansas 23.8% — 23% +0.8
South Dakota 1.9% 1.1% 1.7% +0.8
Florida 21.5% 21% 20.5% +0.5
New Mexico 91.4% 91.7% 95% −0.3
Colorado 96.1% 96.1% 96.8% 0
Show all 204 House districts
RaceVote-ScopeKalshiPolymarketGap
CO-3 67.5% 29.7% — +37.8
TX-15 50.6% 83.8% 82.5% −33.2
AZ-2 48% 23.8% — +24.2
NC-11 53.1% 76.7% 76.5% −23.6
FL-11 30.1% — 8.5% +21.6
FL-16 36.4% — 17% +19.4
ME-2 55% 35.6% — +19.4
FL-13 43.6% 24.5% 26.5% +19.1
NJ-7 73% 91% — −18
TX-35 44.6% 62.2% 59.5% −17.6
FL-27 17.5% — 34% −16.5
VA-2 72.1% 86.9% — −14.8
OH-15 39.6% — 25% +14.6
MT-1 42.2% 28.7% — +13.5
FL-25 66% — 79.5% −13.5
NC-14 21.1% — 9% +12.1
FL-14 79.4% — 67.5% +11.9
NY-17 71.1% 59.2% 59.5% +11.9
VA-1 42.4% 54% — −11.6
CA-22 76.5% 88.1% — −11.6
WI-1 47.8% 37.3% — +10.5
TX-38 13.3% — 3% +10.3
TX-34 73.9% 84.2% 83.5% −10.3
NV-4 99.4% 90.5% — +8.9
PA-8 82% 73.3% — +8.7
FL-18 15.2% — 6.5% +8.7
MI-7 70.5% 62.4% — +8.1
NY-3 99% 90.9% — +8.1
NC-13 19.1% — 12% +7.1
NY-4 98.8% 92.1% — +6.7
GA-11 9.3% — 3.1% +6.2
FL-23 99.5% 93.5% 95.9% +6
GA-10 8.1% — 2.1% +6
MI-4 42% 48% — −6
TX-22 10.4% — 4.5% +5.9
NV-1 99.3% 93.5% — +5.8
CO-8 77.6% 83.2% — −5.6
TX-21 9.6% — 4% +5.6
FL-26 5% — 10.5% −5.5
FL-15 9.4% — 4% +5.4
NY-22 99.6% 94.4% 94.5% +5.2
WI-3 79.1% 74% — +5.1
MN-2 96.7% 91.7% — +5
NC-10 9.8% — 5% +4.8
TX-10 12.3% — 7.5% +4.8
AK-AL 5.7% 0.9% 2.2% +4.8
CA-23 6.5% — 1.8% +4.7
CA-33 99.9% — 95.3% +4.6
NV-3 97.7% 93.1% — +4.6
MI-3 99.7% 95.3% — +4.4
MI-10 68.8% 64.4% 64.5% +4.4
CA-30 100% — 95.7% +4.3
CA-43 100% — 95.7% +4.3
NJ-11 99.8% — 95.5% +4.3
MI-11 99.9% — 95.8% +4.1
TX-23 35.6% — 31.5% +4.1
FL-24 100% — 96% +4
FL-28 1.5% — 5.5% −4
IL-14 99.7% — 95.7% +4
OH-12 0.5% — 4.5% −4
CA-21 98.5% 94.6% 96.2% +3.9
CA-46 100% — 96.1% +3.9
OH-9 74.2% 70.3% — +3.9
TX-20 100% — 96.1% +3.9
VA-10 98.6% 94.7% 96.9% +3.9
IL-13 99.9% — 96.1% +3.8
OH-10 11.7% — 15.5% −3.8
TX-12 1.7% — 5.5% −3.8
AZ-6 80% 83.8% — −3.8
CA-25 99.7% — 95.9% +3.8
CA-29 100% — 96.2% +3.8
CA-32 100% — 96.2% +3.8
CA-51 99.8% — 96% +3.8
CA-52 100% — 96.2% +3.8
IL-11 99.8% — 96% +3.8
NM-2 94.1% 90.3% — +3.8
CA-26 99.7% — 96% +3.7
CA-42 99.7% — 96% +3.7
FL-22 50.8% — 54.5% −3.7
NY-18 99.5% 95.8% 95.5% +3.7
CA-50 99.9% — 96.3% +3.6
TX-25 5.5% — 1.9% +3.6
CA-31 99.5% — 95.9% +3.6
IL-16 6.4% — 2.9% +3.5
CA-10 100% — 96.5% +3.5
CA-13 97.1% 93.6% 95.8% +3.5
IL-15 0.1% — 3.6% −3.5
IA-3 75.7% 79.2% — −3.5
NY-13 100% — 96.5% +3.5
PA-15 0% — 3.5% −3.5
PA-17 99.4% 95.9% 96.4% +3.5
CT-5 98.5% 95.1% — +3.4
NJ-12 100% — 96.6% +3.4
TX-9 13.3% 16.7% — −3.4
CA-37 100% — 96.7% +3.3
NE-2 96% 92.7% — +3.3
NY-14 100% — 96.7% +3.3
IL-17 99.5% 96.3% 96.8% +3.2
NY-26 100% — 96.8% +3.2
VA-11 100% — 96.8% +3.2
PA-1 33.5% 36.6% — −3.1
PA-11 1.8% — 4.9% −3.1
IL-10 100% — 96.9% +3.1
CA-27 99% 96% — +3
GA-14 1.3% — 4.3% −3
TX-28 87.9% 90.9% 91.5% −3
CA-45 96% 93.1% 94.5% +2.9
IN-7 100% 97.1% — +2.9
MO-5 100% 97.1% — +2.9
TX-24 9.4% — 6.5% +2.9
PA-16 1.1% — 4% −2.9
TX-14 5% — 2.1% +2.9
NY-21 21.1% — 24% −2.9
FL-19 1.7% — 4.5% −2.8
CA-16 100% — 97.2% +2.8
CA-36 100% — 97.2% +2.8
NY-20 100% — 97.2% +2.8
PA-7 84.2% 87% — −2.8
TX-30 100% — 97.2% +2.8
CA-28 100% — 97.3% +2.7
NJ-9 98.7% 96% — +2.7
NY-25 99.9% — 97.2% +2.7
TX-27 7% — 4.3% +2.7
CA-41 99.7% 97.1% 96% +2.6
ND-AL 0% — 2.6% −2.6
CA-15 100% — 97.4% +2.6
NY-12 100% — 97.4% +2.6
NY-16 100% — 97.5% +2.5
NC-12 100% — 97.5% +2.5
TX-33 100% — 97.5% +2.5
WY-AL 0% — 2.5% −2.5
UT-1 100% 97.6% — +2.4
TX-16 99.9% — 97.6% +2.3
GA-12 6.7% — 9% −2.3
CA-44 100% — 97.7% +2.3
FL-20 100% — 97.7% +2.3
IN-1 99.5% 97.2% — +2.3
TX-29 100% — 97.7% +2.3
TX-37 100% — 97.7% +2.3
CA-12 100% — 97.8% +2.2
TX-31 2.3% — 4.5% −2.2
CA-24 100% — 97.9% +2.1
NH-1 91.9% 94% — −2.1
NY-10 100% — 97.9% +2.1
NY-15 100% — 97.9% +2.1
NY-19 96.7% 98.8% 97.2% −2.1
CA-34 100% — 98% +2
CA-48 91.5% — 93.5% −2
FL-10 100% — 98% +2
MI-12 100% — 98% +2
MI-13 100% — 98% +2
FL-12 8.6% — 10.5% −1.9
IL-12 0% — 1.9% −1.9
PA-13 0% — 1.9% −1.9
SD-AL 1.6% — 3.5% −1.9
PA-14 0.3% — 2.1% −1.8
PA-12 99.8% — 98% +1.8
VT-AL 100% — 98.2% +1.8
CA-18 100% — 98.3% +1.7
DE-AL 99.9% — 98.2% +1.7
OR-5 97.8% 96.1% — +1.7
NY-24 4.5% — 2.8% +1.7
TX-13 0.1% — 1.8% −1.7
UT-3 0.1% 1.8% — −1.7
MI-8 99.2% 97.6% — +1.6
CA-11 100% — 98.5% +1.5
CA-17 100% — 98.5% +1.5
CA-38 99.4% — 97.9% +1.5
GA-13 100% — 98.5% +1.5
NJ-10 100% — 98.5% +1.5
TX-11 0.4% — 1.9% −1.5
TX-32 13.5% 12% 11.3% +1.5
CA-19 100% — 98.6% +1.4
CA-39 99.5% — 98.1% +1.4
TX-18 100% — 98.6% +1.4
WA-10 100% — 98.6% +1.4
CA-20 0.7% — 2.1% −1.4
FL-21 5.4% — 6.8% −1.4
NJ-5 99.8% 98.4% — +1.4
OH-13 97.6% 98.9% 95.8% −1.3
CA-3 99.1% 97.8% — +1.3
CA-35 99.6% — 98.3% +1.3
FL-17 3.3% — 4.5% −1.2
OH-11 100% — 98.9% +1.1
AZ-1 80.6% 81.6% — −1
NY-23 3.2% — 2.2% +1
OH-1 88.2% 89.2% — −1
TX-36 2.5% — 3.5% −1
VA-7 97.5% 96.6% — +0.9
WA-8 99.5% 98.6% — +0.9
WA-3 89.7% 90.6% — −0.9
TX-19 0% — 0.8% −0.8
CA-49 99.1% 98.3% 95.5% +0.8
IA-1 87.5% 88.3% — −0.8
NY-11 5.2% — 4.5% +0.7
CA-9 99.8% 99.2% — +0.6
CA-14 100% — 99.4% +0.6
NC-1 66.4% 67% — −0.6
PA-10 81% 80.4% 80.5% +0.6
CA-47 99% 98.5% 97% +0.5
UT-2 3.2% 3.7% — −0.5
TX-26 2.5% — 2.9% −0.4
OH-14 1.5% — 1.6% −0.1
TX-17 4.5% — 4.5% 0

Probability of a Democratic win. Kalshi: prices renormalized across outcomes; Polymarket: last traded price. Races with no money at stake are left out.

Data as of October 15, 2026. Vote-Scope is not affiliated with or endorsed by the exchanges shown; every price links to its source.

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