Iowa State Senate seat · lines in effect since 2022
Iowa Senate District 15
A district of about 62,000 people, 23% Hispanic, 22% of adults with a bachelor's degree. It votes D+18.5 relative to the nation for president.
Where it sits among all 50 seats
Every Iowa State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who lives here, compared
Grey bars show the spread of all 50 seats. Small marks are other seats in Iowa. The black marker is District 15.
Lower than 84% of seats.
Lower than 76% of seats.
Higher than 98% of seats.
Higher than 82% of seats.
Higher than 96% of seats.
Denser than 86% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 126% Hispanic · 22% college gradsR+9.4Held DDistrict 17
22% college gradsD+38.5Held DDistrict 49
26% college gradsD+11.2Held DDistrict 20
29% college gradsR+3.4Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Tony Bisignano (D)
2023– · Won 2022 by 90.6, 2026 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)