Model with a market input

DDHQ / The Hill

Decision Desk HQ’s model, led by Scott Tranter: fundamentals and polls, with prediction-market prices as one input.

Their forecast →
83.3%Points share on 6 battlegrounds
4–0–2Right – wrong – no call
100.0%Hit rate when it made a call
5–1–0Forced call: right – wrong – tie
83.3%60% line: points share (4–0–2 right – wrong – no pick)
0.110Probability accuracy on battlegrounds (lower is better)
0.023Probability accuracy, all its called races
0.046Three-way accuracy, D / R / I (0 is perfect, 2 the worst)
0 of 0Flips it named that happened · 1 seats flipped among the races it rated
+1.3Seats against expectations: kept by the seat-holding party beyond (+) or short of (−) its stated chances

Probability skill on battlegrounds: +56% against saying 50–50 everywhere.

By rating

How its ratings held up

RatingHeld
Solid / Safe22 of 22
Likely3 of 3
Lean2 of 2

Bold calls

Sides only it named (1)

Battlegrounds where it named a side no other forecaster named.

RaceIts forecastCallResult
Colorado 5 (House)Likely R · R 75%RNot yet called

Late moves

Its changes since Oct 21 (66)

WhenRaceFrom → toOutcome
Oct 26, 12:09 PM ETNebraska SenateLikely R 76% → Lean R 73%pending
Oct 29, 12:07 PM ETAlaska SenateLean D 61% → Toss-up D 60%pending
Oct 29, 12:07 PM ETKansas SenateLean R 63% → Toss-up R 58%pending
Oct 31, 4:09 PM ETKentucky SenateSolid/Safe R 95% → Likely R 94%pending
Oct 31, 4:09 PM ETMaine SenateToss-up D 60% → Lean D 61%pending
Oct 31, 4:09 PM ETNebraska SenateLean R 72% → Likely R 76%pending
Nov 1, 3:08 PM ETKentucky SenateLikely R 94% → Solid/Safe R 95%pending
Nov 1, 3:08 PM ETNebraska SenateLikely R 76% → Lean R 74%pending
Nov 1, 11:38 PM ETAlaska SenateToss-up D 60% → Lean D 61%pending
Nov 1, 11:38 PM ETKansas SenateToss-up R 54% → Toss-up 50%pending
Nov 1, 11:38 PM ETKentucky SenateSolid/Safe R 95% → Likely R 94%pending
Nov 1, 11:38 PM ETMichigan SenateLean D 73% → Likely D 76%pending
Nov 1, 11:38 PM ETTexas SenateToss-up D 59% → Lean D 61%pending
Nov 2, 10:37 AM ETKansas SenateToss-up 50% → Toss-up D 51%pending
Nov 3, 1:38 AM ETAlaska at-large (House)Likely R 80% → Lean R 73%pending
Nov 3, 1:38 AM ETAlabama 2 (House)Likely R 76% → Lean R 69%pending
Nov 3, 1:38 AM ETArizona 1 (House)Lean D 71% → Likely D 76%pending
Nov 3, 1:38 AM ETArizona 2 (House)Likely R 79% → Lean R 72%pending
Nov 3, 1:38 AM ETColorado 3 (House)Lean R 66% → Toss-up R 57%pending
Nov 3, 1:38 AM ETFlorida 4 (House)Likely R 76% → Lean R 73%pending
Nov 3, 1:38 AM ETFlorida 9 (House)Lean R 63% → Toss-up R 59%pending
Nov 3, 1:38 AM ETFlorida 13 (House)Likely R 76% → Lean R 70%pending
Nov 3, 1:38 AM ETFlorida 16 (House)Likely R 78% → Lean R 73%pending
Nov 3, 1:38 AM ETFlorida 17 (House)Solid/Safe R 95% → Likely R 94%pending
Nov 3, 1:38 AM ETFlorida 27 (House)Likely R 76% → Lean R 71%pending
Nov 3, 1:38 AM ETIowa 2 (House)Toss-up R 58% → Toss-up D 52%pending
Nov 3, 1:38 AM ETIllinois 17 (House)Likely D 94% → Solid/Safe D 97%pending
Nov 3, 1:38 AM ETKansas 3 (House)Likely D 93% → Solid/Safe D 95%pending
Nov 3, 1:38 AM ETKentucky 6 (House)Lean R 73% → Toss-up R 60%pending
Nov 3, 1:38 AM ETMaryland 1 (House)Solid/Safe R 96% → Likely R 94%pending
Nov 3, 1:38 AM ETMaine 2 (House)Lean R 61% → Toss-up R 55%pending
Nov 3, 1:38 AM ETMichigan 4 (House)Lean R 66% → Toss-up R 59%pending
Nov 3, 1:38 AM ETMichigan 7 (House)Lean D 74% → Likely D 80%pending
Nov 3, 1:38 AM ETMichigan 10 (House)Toss-up D 60% → Lean D 66%pending
Nov 3, 1:38 AM ETMissouri 2 (House)Likely R 77% → Lean R 65%pending
Nov 3, 1:38 AM ETMontana 1 (House)Lean R 71% → Toss-up R 53%pending
Nov 3, 1:38 AM ETNorth Carolina 1 (House)Toss-up D 57% → Lean D 65%pending
Nov 3, 1:38 AM ETNorth Carolina 3 (House)Likely R 78% → Lean R 69%pending
Nov 3, 1:38 AM ETNorth Carolina 11 (House)Toss-up R 51% → Toss-up D 59%helped
Nov 3, 1:38 AM ETNebraska 2 (House)Likely D 92% → Solid/Safe D 95%pending
Nov 3, 1:38 AM ETNew Jersey 2 (House)Likely R 77% → Lean R 71%pending
Nov 3, 1:38 AM ETNevada 2 (House)Likely R 76% → Lean R 72%pending
Nov 3, 1:38 AM ETNew York 17 (House)Toss-up D 58% → Lean D 61%pending
Nov 3, 1:38 AM ETNew York 23 (House)Solid/Safe R 95% → Likely R 94%pending
Nov 3, 1:38 AM ETOhio 7 (House)Toss-up R 53% → Toss-up D 54%pending
Nov 3, 1:38 AM ETOhio 9 (House)Lean D 68% → Likely D 75%pending
Nov 3, 1:38 AM ETOklahoma 1 (House)Solid/Safe R 95% → Likely R 93%pending
Nov 3, 1:38 AM ETPennsylvania 1 (House)Lean R 63% → Toss-up R 55%pending
Nov 3, 1:38 AM ETPennsylvania 7 (House)Lean D 74% → Likely D 76%pending
Nov 3, 1:38 AM ETPennsylvania 8 (House)Toss-up D 53% → Lean D 66%pending
Nov 3, 1:38 AM ETPennsylvania 16 (House)Solid/Safe R 96% → Likely R 94%pending
Nov 3, 1:38 AM ETSouth Carolina 5 (House)Solid/Safe R 96% → Likely R 94%pending
Nov 3, 1:38 AM ETTennessee 7 (House)Solid/Safe R 97% → Likely R 94%pending
Nov 3, 1:38 AM ETTexas 2 (House)Solid/Safe R 95% → Likely R 94%pending
Nov 3, 1:38 AM ETTexas 17 (House)Solid/Safe R 95% → Likely R 94%pending
Nov 3, 1:38 AM ETTexas 21 (House)Solid/Safe R 95% → Likely R 94%pending
Nov 3, 1:38 AM ETTexas 22 (House)Solid/Safe R 96% → Likely R 94%pending
Nov 3, 1:38 AM ETTexas 23 (House)Likely R 77% → Lean R 70%pending
Nov 3, 1:38 AM ETTexas 31 (House)Solid/Safe R 95% → Likely R 93%pending
Nov 3, 1:38 AM ETTexas 34 (House)Lean D 71% → Likely D 78%pending
Nov 3, 1:38 AM ETTexas 35 (House)Toss-up R 59% → Toss-up D 51%pending
Nov 3, 1:38 AM ETVirginia 5 (House)Likely R 75% → Lean R 70%pending
Nov 3, 1:38 AM ETWisconsin 7 (House)Solid/Safe R 96% → Likely R 94%pending
Nov 3, 12:36 PM ETAlaska SenateLean D 61% → Toss-up D 60%pending
Nov 3, 12:36 PM ETSouth Carolina SenateLean R 61% → Toss-up R 60%pending
Nov 3, 12:36 PM ETTexas SenateLean D 62% → Toss-up D 60%pending

Every battleground

All 86 it rated

RaceForecastCallResult
Alaska at-large (House)Lean R · R 73%RNot yet called
Alabama 2 (House)Lean R · R 69%RNot yet called
Arizona 1 (House)Likely D · D 76%DNot yet called
Arizona 2 (House)Lean R · R 72%RNot yet called
Arizona 6 (House)Likely D · D 84%DNot yet called
California 13 (House)Likely D · D 87%DNot yet called
California 22 (House)Likely D · D 84%DNot yet called
California 48 (House)Likely D · D 92%DNot yet called
Colorado 3 (House)Toss Up · R 57%Toss-upNot yet called
Colorado 4 (House)Likely R · R 81%RNot yet called
Colorado 5 (House)Likely R · R 75%RNot yet called
Colorado 8 (House)Likely D · D 83%DNot yet called
Florida 4 (House)Lean R · R 73%RNot yet called
Florida 7 (House)Lean R · R 69%RNot yet called
Florida 9 (House)Toss Up · R 59%Toss-upNot yet called
Florida 13 (House)Lean R · R 70%RNot yet called
Florida 14 (House)Lean D · D 73%D ✓D Democrat hold · called Nov 3, 7:52 PM ET
Florida 16 (House)Lean R · R 73%RNot yet called
Florida 22 (House)Toss Up · R 51%Toss-up · ½D Democrat hold · called Nov 3, 8:12 PM ET
Florida 25 (House)Lean D · D 70%D ✓D Democrat hold · called Nov 3, 8:04 PM ET
Florida 27 (House)Lean R · R 71%RNot yet called
Iowa 1 (House)Likely D · D 85%DNot yet called
Iowa 2 (House)Toss Up · D 52%Toss-upNot yet called
Iowa 3 (House)Lean D · D 73%DNot yet called
Kentucky 6 (House)Toss Up · R 60%Toss-upNot yet called
Maine 2 (House)Toss Up · R 55%Toss-upNot yet called
Michigan 4 (House)Toss Up · R 59%Toss-upNot yet called
Michigan 7 (House)Likely D · D 80%DNot yet called
Michigan 10 (House)Lean D · D 66%DNot yet called
Minnesota 1 (House)Lean R · R 66%RNot yet called
Missouri 2 (House)Lean R · R 65%RNot yet called
Montana 1 (House)Toss Up · R 53%Toss-upNot yet called
North Carolina 1 (House)Lean D · D 65%DNot yet called
North Carolina 3 (House)Lean R · R 69%RNot yet called
North Carolina 11 (House)Toss Up · D 59%Toss-up · ½D Democrat flip · called Nov 3, 8:34 PM ET
Nebraska 2 (House)Safe D · D 95%DNot yet called
New Hampshire 1 (House)Likely D · D 89%D ✓D Democrat hold · called Nov 3, 8:04 PM ET
New Jersey 2 (House)Lean R · R 71%RNot yet called
New Jersey 7 (House)Likely D · D 85%DNot yet called
New Mexico 2 (House)Likely D · D 84%DNot yet called
Nevada 1 (House)Likely D · D 92%DNot yet called
Nevada 2 (House)Lean R · R 72%RNot yet called
Nevada 3 (House)Likely D · D 86%DNot yet called
New York 1 (House)Lean R · R 62%RNot yet called
New York 3 (House)Likely D · D 93%DNot yet called
New York 4 (House)Likely D · D 89%DNot yet called
New York 17 (House)Lean D · D 61%DNot yet called
New York 21 (House)Likely R · R 81%RNot yet called
Ohio 1 (House)Likely D · D 83%DNot yet called
Ohio 7 (House)Toss Up · D 54%Toss-upNot yet called
Ohio 9 (House)Likely D · D 75%DNot yet called
Ohio 10 (House)Likely R · R 87%RNot yet called
Ohio 15 (House)Likely R · R 79%RNot yet called
Pennsylvania 1 (House)Toss Up · R 55%Toss-upNot yet called
Pennsylvania 7 (House)Likely D · D 76%DNot yet called
Pennsylvania 8 (House)Lean D · D 66%DNot yet called
Pennsylvania 10 (House)Lean D · D 71%DNot yet called
South Carolina 1 (House)Lean R · R 64%RNot yet called
Tennessee 5 (House)Safe R · R 96%RNot yet called
Tennessee 9 (House)Likely R · R 90%RNot yet called
Texas 9 (House)Likely R · R 86%RNot yet called
Texas 15 (House)Toss Up · R 51%Toss-upNot yet called
Texas 23 (House)Lean R · R 70%RNot yet called
Texas 28 (House)Likely D · D 93%DNot yet called
Texas 34 (House)Likely D · D 78%DNot yet called
Texas 35 (House)Toss Up · D 51%Toss-upNot yet called
Virginia 1 (House)Lean R · R 64%RNot yet called
Virginia 2 (House)Likely D · D 85%DNot yet called
Virginia 5 (House)Lean R · R 70%RNot yet called
Washington 3 (House)Likely D · D 91%DNot yet called
Wisconsin 1 (House)Lean R · R 62%RNot yet called
Wisconsin 3 (House)Likely D · D 80%DNot yet called
Alaska SenateToss Up · D 60%Toss-upNot yet called
Florida SenateLikely R · R 76%R ✓R Republican hold · called Nov 3, 8:03 PM ET
Iowa SenateToss Up · R 52%Toss-upNot yet called
Kansas SenateToss Up · D 51%Toss-upNot yet called
Maine SenateLean D · D 64%DNot yet called
Michigan SenateLikely D · D 75%DNot yet called
Minnesota SenateLikely D · D 84%DNot yet called
Montana SenateLikely R · R 77%RNot yet called
North Carolina SenateLikely D · D 87%DNot yet called
Nebraska SenateLean R · R 74%RNot yet called
New Hampshire SenateLikely D · D 87%DNot yet called
Ohio SenateToss Up · D 54%Toss-upNot yet called
South Carolina SenateToss Up · R 60%Toss-upNot yet called
Texas SenateToss Up · D 60%Toss-upNot yet called

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