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)
- Vote-Scope (ours) 65.8%
- Kalshi 61.8%
- Polymarket 63.5%
House control (Democratic)
- Vote-Scope (ours) 96.4%
- Kalshi 91%
- Polymarket 90.5%
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
| Race | Vote-Scope | Kalshi | Polymarket | Gap |
|---|---|---|---|---|
| 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
| Race | Vote-Scope | Kalshi | Polymarket | Gap |
|---|---|---|---|---|
| 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
| Race | Vote-Scope | Kalshi | Polymarket | Gap |
|---|---|---|---|---|
| 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.
Also compare with The Economist, DDHQ, Cook…
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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