Election Day, Nov 3 9 daysSenate D 78%House D 93%Governors D 86%Forecast updated Oct 25

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Senate · Colorado

Colorado Senate

John Hickenlooper vs Mark Baisley

ForecastD +20.8
Democrat>99%
Republican<1%
RatingSafe D
Full forecast
Brief me as

Neutral view. Pick a side and the War Room briefs you as that campaign's operative.

Vital signs

Campaign health, 0 to 100, from public money, outside spending, ballots and activity
DemocratJohn HickenlooperStrong
840100
  • Money weight 2599

    Raised $9.3M against $138K for Mark Baisley.

  • Cash weight 2099

    $2.1M in the bank against $28K for Mark Baisley. As of 06/30/2026.

  • Air cover weight 15100

    Outside groups spent $510K helping John Hickenlooper and $0 helping Mark Baisley.

  • Early vote weight 1565

    Registered Democrats cast 33% of the 727,322 ballots in Colorado so far, against 25% for the other party. That is 4.9 points better for Democrats than the forecast expected by now. Counts registration, not votes.

  • Activity weight 1025

    $435K in Google political ads this cycle.

RepublicanMark BaisleyCriticalBase 8, minus 4 for liabilities
40100
  • Money weight 252

    Raised $138K against $9.3M for John Hickenlooper.

  • Cash weight 201

    $28K in the bank against $2.1M for John Hickenlooper. As of 09/30/2026.

  • Air cover weight 150

    Outside groups spent $0 helping Mark Baisley and $510K helping John Hickenlooper.

  • Early vote weight 1535

    Registered Republicans cast 25% of the 727,322 ballots in Colorado so far, against 33% for the other party. That is 4.9 points worse for Republicans than the forecast expected by now. Counts registration, not votes.

  • −4 Outmatched five to one in cash. $28K against $2.1M.

How each side wins

From the forecast, the polls, the county map, voter groups, money and ballots
If you work for John Hickenlooper
  1. Protect the lead

    John Hickenlooper leads by 20.8 in the forecast and wins 100% of simulations. The cushion is about 589,596 votes; a one point swing is about 14,159 voters changing sides.

  2. The range

    In 8 of 10 simulations the result lands between D +12.1 and D +29.2. Only an unusual polling error changes the winner.

  3. Turn out the base

    The biggest vote banks for Democrats: Denver, a projected net 221,624 votes; Boulder, a projected net 108,527 votes; Arapahoe, a projected net 102,656 votes. Every point of extra turnout here is worth more than persuasion anywhere else.

  4. Win the battlegrounds

    The large counties within 12 points: El Paso, R +1.0, 11.9% of the vote; Douglas, D +1.2, 7.1% of the vote; Pueblo, D +9.0, 2.7% of the vote.

  5. Where you run behind the 2024 map

    Against the 2024 presidential vote, John Hickenlooper runs furthest behind in Larimer, Mesa, Boulder. That is where the forecast sees voters who backed your side two years ago and have not come back yet.

  6. The coalition levers

    Groups big enough to move the race: White voters, 76% of voters, 54 to 44, where a 5 point gain is worth 3.77 points; Voters who cast ballots in 2022 and 2024, 73% of voters, 60 to 37, where a 5 point gain is worth 3.65 points; College graduates, 55% of voters, 61 to 37, where a 5 point gain is worth 2.75 points.

  7. Where you lose ground

    The forecast's worst groups for John Hickenlooper: Immigration voters 25 to 72, Small counties 47 to 50, Midsize counties 50 to 48. Cutting the loss here is often cheaper than winning new groups.

  8. The money

    $2.1M cash against $28K. Spend it early on persuasion television in the battleground counties and keep a reserve for the last week.

  9. The early vote

    Registered Democrats cast 33% of the 727,322 ballots in Colorado so far, against 25% for the other party. That is 4.9 points better for Democrats than the forecast expected by now.

  10. What the ballots so far say

    The early vote has moved this forecast 1.1 points toward John Hickenlooper. Bank it: chase the remaining mail ballots and low propensity voters who have not voted.

  11. Mark Baisley's strongest asset

    Early vote: Registered Republicans cast 25% of the 727,322 ballots in Colorado so far, against 33% for the other party.

If you work for Mark Baisley
  1. Close the gap

    Mark Baisley trails by 20.8 and wins 0% of simulations. Closing it takes about 294,798 voters switching sides, or 589,596 more net votes from new turnout.

  2. The range

    In 8 of 10 simulations the result lands between D +29.2 and D +12.1. Only an unusual polling error changes the winner.

  3. Turn out the base

    The biggest vote banks for Republicans: Weld, a projected net 23,827 votes; Mesa, a projected net 16,100 votes; Elbert, a projected net 7,361 votes. Every point of extra turnout here is worth more than persuasion anywhere else.

  4. Win the battlegrounds

    The large counties within 12 points: El Paso, R +1.0, 11.9% of the vote; Douglas, D +1.2, 7.1% of the vote; Pueblo, D +9.0, 2.7% of the vote.

  5. Where you run behind the 2024 map

    Against the 2024 presidential vote, Mark Baisley runs furthest behind in Arapahoe, Adams, Pueblo. That is where the forecast sees voters who backed your side two years ago and have not come back yet.

  6. The coalition levers

    Groups big enough to move the race: White voters, 76% of voters, 44 to 54, where a 5 point gain is worth 3.77 points; Voters who cast ballots in 2022 and 2024, 73% of voters, 37 to 60, where a 5 point gain is worth 3.65 points; College graduates, 55% of voters, 37 to 61, where a 5 point gain is worth 2.75 points.

  7. Where you lose ground

    The forecast's worst groups for Mark Baisley: Asian and other voters 17 to 80, Health care and Social Security voters 19 to 78, Corruption voters 24 to 74. Cutting the loss here is often cheaper than winning new groups.

  8. The money

    $28K cash against $2.1M. Outspent: lean on earned media, digital, field and the outside groups, and pick the two or three media markets that decide it.

  9. The early vote

    Registered Republicans cast 25% of the 727,322 ballots in Colorado so far, against 33% for the other party. That is 4.9 points worse for Republicans than the forecast expected by now.

  10. What the ballots so far say

    The early vote has moved this forecast 1.1 points away from Mark Baisley. Election Day has to make it up: the remaining vote must break harder your way than the forecast expects.

  11. John Hickenlooper's strongest asset

    Air cover: Outside groups spent $510K helping John Hickenlooper and $0 helping Mark Baisley.

The map for Hickenlooper

County projections from the forecast
Vote banksWhere the biggest net margins come from
CountyForecastVote shareNet D
DenverD +66.611.8%+221,624
BoulderD +60.56.3%+108,527
ArapahoeD +34.910.4%+102,656
JeffersonD +28.811.5%+93,539
BattlegroundsLarge counties within 12 points
CountyForecastVote shareNet D
El PasoR +1.011.9%-3,407
DouglasD +1.27.1%+2,379
PuebloD +9.02.7%+6,929
Behind the 2024 mapRunning furthest behind the last presidential vote
CountyForecastVote shareNet D
LarimerD +21.27%+41,915
MesaR +19.72.9%-16,100
BoulderD +60.56.3%+108,527

The coalition

Hickenlooper against Baisley among the groups that can move it, from the forecast's voter group estimates
Swing groups
  • White voters76% of voters · a 5 point gain is worth 3.8
    5444
  • Voters who cast ballots in 2022 and 202473% of voters · a 5 point gain is worth 3.6
    6137
  • College graduates55% of voters · a 5 point gain is worth 2.8
    6137
  • Men48% of voters · a 5 point gain is worth 2.4
    5344
Weakest groups
  • Immigration voters9% of voters · a 5 point gain is worth 0.5
    2572
  • Small counties15% of voters · a 5 point gain is worth 0.7
    4750
  • Midsize counties7% of voters · a 5 point gain is worth 0.3
    5048
HickenlooperBaisley

Scouting report

From the Watchdog people files, each line with its source
John Hickenlooper

No researched file yet; this candidate is queued for the next people file batch.

Mark Baisley

No researched file yet; this candidate is queued for the next people file batch.

The forecast

Margin over recent runs
R +2.0D +20.916 runs agonow
Now
D +20.8
8 in 10 land between
D +29.2 and D +12.1
Polling average
n/a
Partisan lean
D +12.8
Early vote effect
D +1.1

Recent polls

Last 45 days

No public polls in the last 45 days; the forecast leans on fundamentals and similar races.

Money and the air war

Reports as of 06/30/2026
HickenlooperBaisley
Raised$9.3M$138K
Spent$7.5M$111K
Cash on hand$2.1M$28K
Outside money for$510K$0
Google ads$435K$0
Follow the money

The early vote

Colorado, through 2026-10-24
Ballots cast
727,322
Party data
Reported by the state
Ballot margin
D +8.2
Forecast expected
D +3.3
Against expectation
4.9 points better for Democrats

Party registration of who has voted, not how they voted.

Open the early vote tracker

Media watch

Who is putting this race in front of an audience

Nothing logged yet for this race.

Media watch

On the trail

Rallies and events, newest first

No stops logged yet for this race.

Races that move with this one

When the polls miss here, they tend to miss there too