House Effects
Monday, September 21, 202643 days until Election Day, November 3, 2026
House · 2026

Colorado’s 4th District

Eileen Laubacher (D)v.Lauren Boebert (R)LIKELY R

Incumbent: Lauren Boebert, currently Republican.

Projected margin
R+9.4
Nine in ten outcomes: Even to R+19
Chance of winning
94%
Lauren Boebert
Polls alone
No public general-election polls yet.
Fundamentals alone
R+9.4
Weight in projection: 100%.
Before any poll

What the fundamentals say

A regression on past House races, fit without looking at this year. The national environment term uses the generic ballot after its historical correction (D+5.3).

What each term adds to the estimate
BaselineD+0.8
Partisan leanR+14.3
National environmentD+3.6
IncumbencyR+3.6
Incumbent's last over/under-performanceD+1.5
Fundraising gapD+2.5
Fundamentals estimateR+9.4
Input: partisan lean
R+16.8
Presidential vote relative to the nation, 2024 on this year's lines.
Input: raised from itemized individual donors, through June 30
$2.8M D · $411K R
FEC filings; the model uses the log of the ratio.
Handicappers, for comparison
Cook: Safe R · Sabato: Likely R · Inside Elections: Safe R
Not an input to the projection.