99chambers

Iowa House of Representatives seat · lines in effect since 2022

Iowa House District 46

A district of about 16,000 people, 47% of adults with a bachelor's degree. It votes R+7.8 relative to the nation for president.

Dan Gehlbach (R) · since Nov 8, 2022Flipped in 2026Next election Nov 7, 2028The 2026 race →

Where it sits among all 100 seats

Every Iowa House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

R+7.844th most
Democratic
Most DemocraticMost Republican51st seat · the majority lineDistrict 46

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

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

202220242026
Iowa House of RepresentativesR+11.2R+10.3D+1.5

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Iowa Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 100 seats. Small marks are other seats in Iowa. The black marker is District 46.

Adults with a bachelor's degree47% 82nd pct · 19th of 100 in IA

Higher than 82% of seats.

White adults without a degree46% 21st pct · 79th of 100 in IA

Lower than 79% of seats.

Hispanic residents5% 45th pct · 55th of 100 in IA

Lower than 55% of seats.

Black residents2% 56th pct · 45th of 100 in IA

Higher than 56% of seats.

Asian residents5% 86th pct · 15th of 100 in IA

Higher than 86% of seats.

People per square mile115 51st pct · 50th of 100 in IA

Denser than 51% 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. 1 of the 4 flipped this year.

District 28
55% college gradsR+1.2Flipped DDistrict 45
49% college gradsR+23.8Held RDistrict 92
37% college gradsR+14.2Held RDistrict 94
47% college gradsR+6.7Held R

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.

  1. Mandy Newton Rosenow (D)
    2027– · Won 2026 by 1.5
  2. Dan Gehlbach (R)
    2023–2027 · Won 2022 by 11.2, 2024 by 10.3

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)