Nonpartisan Analysis Since 1980

Delaware
Senate

State Map

State map

Current Rating

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Solid D

2025 Baseline

What's This?
D +15.8
D: 57.4%, R: 41.6%

2026 Election

Class II

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Past Elections

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Calendar

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JUL
14
2026
Candidate Filing Deadline
SEP
15
2026
Primary Election Day
NOV
3
2026
Election Day

Analysis

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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

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

July 24, 2025
by Jacob Rubashkin

2026 Senate Overview (April 17, 2025): Alabama – Kansas

April 17, 2025
by Jacob Rubashkin

2026 Senate Overview (Jan. 9, 2025): Alabama – Kansas

January 9, 2025
by Jacob Rubashkin

Ratings

2026
January 9, 2025
Solid Democrat
January 9, 2025
Not Up This Cycle
2024
May 23, 2023
Solid Democrat
January 6, 2023
Solid Democrat
2022
January 8, 2021
Not Up This Cycle
2020
December 15, 2020
Solid Democrat
January 4, 2019
Not Up This Cycle
January 4, 2019
Solid Democrat
2018
January 13, 2017
Solid Democrat
2016
January 9, 2015
Not Up This Cycle
2014
January 25, 2013
Not Up This Cycle
January 25, 2013
Solid Democrat
2012
January 28, 2011
Solid Democrat
January 1, 2011
Not Up This Cycle
2010
September 17, 2010
Likely Democrat
September 15, 2010
Lean Democrat
June 24, 2010
Not Up This Cycle
June 24, 2010
Lean Republican

Baselines

About
2025+15.8D 57.4, R 41.6
2024
+15.8
2022
+16.4
2020
+16.2
2018
+18.8
2016
+16.4
2014
+17.4