Nonpartisan Analysis Since 1980

Iowa
Senate III

State Map

State map

Current Rating

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Not Up This Cycle

2025 Baseline

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

Incumbent

Grassley

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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Gubernatorial Overview (June 25, 2026)

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

Senate Report Shorts (June 25, 2026)

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

2026 House Overview (June 11, 2026)

June 11, 2026
by Jacob Rubashkin & Nathan Gonzales

Senate Report Shorts (June 11, 2026)

June 11, 2026
by Jacob Rubashkin

Governor Report Shorts (June 11, 2026)

June 11, 2026
by Jacob Rubashkin

Ratings

2026
January 6, 2023
Not Up This Cycle
2024
January 6, 2023
Not Up This Cycle
2022
October 21, 2022
Likely Republican
January 8, 2021
Solid Republican
2018
January 13, 2017
Not Up This Cycle
2016
April 17, 2015
Solid Republican
January 9, 2015
Likely Republican
2012
January 1, 2011
Not Up This Cycle
2010
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