Michigan State Senate seat · lines in effect since 2026

Michigan Senate District 30

A district of about 274,000 people, 45% of adults with a bachelor's degree. It votes D+4.2 relative to the nation for president.

Mark Huizenga (R) · since Nov 8, 2022Flipped in 2026Next election Nov 5, 2030The 2026 race →

Where it sits among all 38 seats

Every Michigan 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.

D+4.216th most
Democratic
Most DemocraticMost Republican20th seat · the majority lineDistrict 30

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.

201820202026
U.S. SenateD+25.0D+26.0No race
GovernorD+29.8No raceNo race
Michigan State SenateNo raceNo raceD+9.7

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 38 seats. Small marks are other seats in Michigan. The black marker is District 30.

Adults with a bachelor's degree45% 86th pct · 6th of 38 in MI

Higher than 86% of seats.

White adults without a degree44% 30th pct · 27th of 38 in MI

Lower than 70% of seats.

Hispanic residents7% 81st pct · 8th of 38 in MI

Higher than 81% of seats.

Black residents5% 43rd pct · 22nd of 38 in MI

Lower than 57% of seats.

Asian residents2% 57th pct · 17th of 38 in MI

Higher than 57% of seats.

People per square mile760 57th pct · 17th of 38 in MI

Denser than 57% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Who has held it

These lines took effect in 2026.

  1. Carol Glanville (D)
    2027– · Won 2026 by 9.7

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