99chambers

Iowa House of Representatives seat · lines in effect since 2022

Iowa House District 56

A district of about 32,000 people, 22% of adults with a bachelor's degree. It votes R+44.2 relative to the nation for president.

Mark Thompson (R) · since Nov 8, 2022Next 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+44.289th most
Democratic
Most DemocraticMost Republican51st seat · the majority lineDistrict 56

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.

20242026
Iowa House of RepresentativesR+48.4R+39.4

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 56.

Adults with a bachelor's degree22% 21st pct · 79th of 100 in IA

Lower than 79% of seats.

White adults without a degree69% 78th pct · 23rd of 100 in IA

Higher than 78% of seats.

Hispanic residents11% 82nd pct · 19th of 100 in IA

Higher than 82% of seats.

Black residents0% 4th pct · 96th of 100 in IA

Lower than 96% of seats.

Asian residents1% 32nd pct · 68th of 100 in IA

Lower than 68% of seats.

People per square mile23 12th pct · 88th of 100 in IA

Less dense than 88% 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 95
20% college gradsR+39.7Held RDistrict 9
22% college gradsR+38.1Held RDistrict 24
IowaR+47.0Held RDistrict 55
25% college gradsR+31.6Held 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. Mark Thompson (R)
    2023– · Won 2022 by 64.7, 2024 by 48.4, 2026 by 39.4

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