Districts › Senate
Senate District 37
Every race for this seat since 2018, with campaign money →
Represented by
Sen. Molly Donahue Democrat · Linn
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
- Molly Donahue DProjected winnerIncumbentRe-elected18,83362.4%
- Randy Marzen R11,35037.6%
Registered voters
39,713 active voters, November 2026. Democrats lead by 2,092.
| November 2026 | November 2025 | June 2022 | |
|---|---|---|---|
| Republican | 11,747 29.6% | 11,537 30.2% | 11,414 29.3% |
| Democratic | 13,839 34.8% | 12,768 33.4% | 14,227 36.5% |
| No party | 13,781 34.7% | 13,546 35.4% | 12,974 33.3% |
| Other parties | 346 0.9% | 371 1.0% | 389 1.0% |
Active registrations from the Secretary of State’s monthly totals (Iowa Data Hub); a Senate district is two House districts. Inactive registrations (about 13.5% of the total) aren’t counted.
Who lives here
- People2.0% of Iowans63,657
- Median household incomeIowa: $75,501$82,862
- Median ageIowa: 39.040.3
- Adults with a bachelor’s degree or moreIowa: 32.1%41.1%
- Below the poverty lineIowa: 11.3%7.6%
- Homes lived in by their ownersIowa: 71.3%73.8%
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.