Nonpartisan Analysis Since 1980

Iowa
Senate

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Current Rating

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Lean R

2025 Baseline

What's This?
R +7.1
D: 45.7%, R: 52.8%

2026 Election

Class II

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Past Elections

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Calendar

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MAR
13
2026
Candidate Filing Deadline
JUN
2
2026
Primary Election Day
NOV
3
2026
Election Day

Analysis

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Senate Report Shorts (June 25, 2026)

June 25, 2026
by Jacob Rubashkin, Nathan Gonzales & Inshara Ali

Senate Report Shorts (June 11, 2026)

June 11, 2026
by Jacob Rubashkin

Primary Results in Iowa, Montana, New Jersey, New Mexico and South Dakota

June 4, 2026
by Nathan Gonzales & Jacob Rubashkin

Report Shorts (Feb. 19, 2026)

February 19, 2026
by Jacob Rubashkin

2026 Senate Overview

January 22, 2026
by Nathan Gonzales & Jacob Rubashkin

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

October 23, 2025
by Jacob Rubashkin

Iowa Senate: Democrats Reach for Open Seat

September 25, 2025
by Jacob Rubashkin

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

September 11, 2025
by Jacob Rubashkin

Iowa Senate: Ernst Out, Republicans Still Favored

August 29, 2025
by Jacob Rubashkin & Nathan Gonzales

House & Senate Report Shorts (Aug. 28, 2025)

August 28, 2025
by Jacob Rubashkin

Ratings

2026
June 25, 2026
Lean Republican
August 28, 2025
Likely Republican
July 24, 2025
Likely Republican
January 9, 2025
Solid Republican
January 6, 2023
Not Up This Cycle
2024
January 6, 2023
Not Up This Cycle
2022
October 21, 2022
Likely Republican
January 8, 2021
Not Up This Cycle
January 8, 2021
Solid Republican
2020
December 15, 2020
Toss-up
July 10, 2020
Toss-up
October 11, 2019
Lean Republican
January 4, 2019
Likely Republican
2018
January 13, 2017
Not Up This Cycle
2016
April 17, 2015
Solid Republican
January 9, 2015
Not Up This Cycle
January 9, 2015
Likely Republican
2014
July 15, 2014
Toss-up
January 26, 2013
Lean Democrat
January 25, 2013
Solid Democrat
2012
January 1, 2011
Not Up This Cycle
2010
June 24, 2010
Not Up This Cycle
June 24, 2010
Solid Republican

Baselines

About
2025+7.1D 45.7, R 52.8
2024
+7.1
2022
+7.4
2020
+5.7
2018
+4.3
2016
+8.0
2014
+4.3