Nonpartisan Analysis Since 1980
Karen Breslin
D Democrat

Karen Breslin

Candidate CO Senate

Next Election

Past Elections

CO-04: 2024

2026 Election: CO Senate

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Current Rating
Solid Democrat
2025 Baseline
+10.6 D 53.8, R 43.2

Campaign Finance Data

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Analysis

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Colorado Primary Results: Rough Night for Washington

June 30, 2026
by Nicholas Demba

House Overview (March 12, 2026): Alabama – Iowa

March 12, 2026
by Jacob Rubashkin

2026 Senate Overview

January 22, 2026
by Nathan Gonzales & Jacob Rubashkin

2026 House Overview (Dec. 5, 2025): Alabama – Iowa

December 5, 2025
by Jacob Rubashkin

2026 Senate Overview (Oct. 23, 2025): Alabama – Kansas

October 23, 2025
by Jacob Rubashkin

2026 House Overview (Sept. 11, 2025): Alabama – Iowa

September 11, 2025
by Jacob Rubashkin

Senate & Governor Report Shorts (Sept. 11, 2025)

September 11, 2025
by Jacob Rubashkin

2026 Senate Overview (July 24, 2025): Alabama – Kansas

July 24, 2025
by Jacob Rubashkin

2026 House Overview (June 5, 2025): Alaska – Iowa

June 5, 2025
by Jacob Rubashkin

Report Shorts (May 15, 2025)

May 15, 2025
by Jacob Rubashkin

Ratings

2026 CO — Senate II
January 9, 2025
Solid Democrat
2024 CO-04 — House
August 29, 2024
Solid Republican
June 20, 2024
Solid Republican
December 1, 2023
Solid Republican
November 13, 2023
Solid Republican
March 10, 2023
Solid Republican
2024 CO — Senate III
January 6, 2023
Not Up This Cycle