Iowa Voter Registration
Party registration trends from 2008 to 2024
As of 2024, Iowa has 2,178,596 registered voters. Democrats hold a R+7.9 registration advantage. Since 2008, Republicans gained 13.2 points.
Current Registration (2024)
Democratic
619,305
28.4%
Republican
791,429
36.3%
Other/None
767,862
35.2%
Total Registered
2,178,596
Advantage
R+7.9
Registration Trend
↘
Republicans gained 13.2 points
From 2008 to 2024
The registration advantage has shifted 13.2 points toward Republicans.
Registration Over Time
20082,001,823
20121,952,044
20162,209,903
20202,203,301
20242,178,596
Democratic
Republican
Other/None
Historical Data
| Year | Democratic | Republican | Other | Total | Advantage |
|---|---|---|---|---|---|
| 2024 | 619,305(28.4%) | 791,429(36.3%) | 767,862 | 2,178,596 | R+7.9(-6.9) |
| 2020 | 723,378(32.8%) | 745,723(33.8%) | 734,200 | 2,203,301 | R+1.0(+0.2) |
| 2016 | 684,578(31.0%) | 711,511(32.2%) | 813,814 | 2,209,903 | R+1.2(-1.1) |
| 2012 | 628,043(32.2%) | 629,443(32.2%) | 694,558 | 1,952,044 | R+0.1(-5.4) |
| 2008 | 698,839(34.9%) | 592,397(29.6%) | 710,587 | 2,001,823 | D+5.3 |