99chambers

Michigan House of Representatives seat · lines in effect since 2024

Michigan House District 31

A district of about 95,000 people, 30% of adults with a bachelor's degree. It votes R+1.9 relative to the nation for president.

Reggie Miller (D) · since Nov 8, 2022Next election Nov 7, 2028The 2026 race →

Where it sits among all 110 seats

Every Michigan 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+1.956th most
Democratic
Most DemocraticMost Republican56th seat · the majority lineDistrict 31

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
Michigan House of RepresentativesD+1.3D+7.0

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

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

Who lives here, compared

Grey bars show the spread of all 110 seats. Small marks are other seats in Michigan. The black marker is District 31.

Adults with a bachelor's degree30% 52nd pct · 53rd of 110 in MI

Higher than 52% of seats.

White adults without a degree57% 59th pct · 46th of 110 in MI

Higher than 59% of seats.

Hispanic residents4% 47th pct · 59th of 110 in MI

Lower than 53% of seats.

Black residents13% 71st pct · 33rd of 110 in MI

Higher than 71% of seats.

Asian residents2% 53rd pct · 52nd of 110 in MI

Higher than 53% of seats.

People per square mile243 34th pct · 73rd of 110 in MI

Less dense than 66% 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 76
32% college gradsD+0.4Held DDistrict 46
23% college gradsR+1.8CountingDistrict 68
30% college gradsR+8.5CountingDistrict 42
36% college gradsR+8.6Counting

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 2024.

  1. Reggie Miller (D)
    2025– · Won 2024 by 1.3

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