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House District 31
Every race for this seat since 2018, with campaign money →
Represented by
Rep. Mary Lee Madison Democrat · Polk
Members elected in November 2026 take office when the 92nd General Assembly convenes on Monday, January 11, 2027. Funnel will show them here once the Legislature publishes the new roster.
Latest election
- Mary Madison DProjected winnerIncumbentRe-elected9,98663.1%
- Kevin W. DuBay R5,81536.8%
Registered voters
20,388 active voters, November 2026. Democrats lead by 1,519.
| November 2026 | November 2025 | June 2022 | |
|---|---|---|---|
| Republican | 6,405 31.4% | 6,405 32.2% | 6,262 31.1% |
| Democratic | 7,924 38.9% | 7,189 36.1% | 7,789 38.7% |
| No party | 5,899 28.9% | 6,119 30.8% | 5,904 29.3% |
| Other parties | 160 0.8% | 174 0.9% | 163 0.8% |
Active registrations from the Secretary of State’s monthly totals (Iowa Data Hub). Inactive registrations (about 14.4% of the total) aren’t counted.
Who lives here
- People1.0% of Iowans33,757
- Median household incomeIowa: $75,501$90,396
- Median ageIowa: 39.036.5
- Adults with a bachelor’s degree or moreIowa: 32.1%56.6%
- Below the poverty lineIowa: 11.3%7.3%
- Homes lived in by their ownersIowa: 71.3%64.1%
U.S. Census Bureau, ACS 2024 5-year estimates (via Census Reporter). Survey estimates have margins of error, larger for small groups.
Who has held this seat
Since the 90th General Assembly (2023), the first elected under the district maps drawn in 2021. Earlier districts with this number covered different areas.