99chambers

Wisconsin State Senate seat · lines in effect since 2024

Wisconsin Senate District 9

A district of about 175,000 people, 26% of adults with a bachelor's degree. It votes R+15.8 relative to the nation for president.

Devin LeMahieu (R) · since Nov 4, 2014Next election Nov 5, 2030The 2026 race →

Where it sits among all 33 seats

Every Wisconsin 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.

R+15.821st most
Democratic
Most DemocraticMost Republican17th seat · the majority lineDistrict 9

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.

2024
U.S. SenateR+14.0

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 33 seats. Small marks are other seats in Wisconsin. The black marker is District 9.

Adults with a bachelor's degree26% 16th pct · 28th of 33 in WI

Lower than 84% of seats.

White adults without a degree64% 66th pct · 12th of 33 in WI

Higher than 66% of seats.

Hispanic residents7% 59th pct · 14th of 33 in WI

Higher than 59% of seats.

Black residents2% 50th pct · 17th of 33 in WI

Higher than 50% of seats.

Asian residents5% 84th pct · 6th of 33 in WI

Higher than 84% of seats.

People per square mile243 53rd pct · 16th of 33 in WI

Denser than 53% 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 29
27% college gradsR+19.3Held RDistrict 31
33% college gradsD+3.2Held DDistrict 32
32% college gradsD+3.6Not up in 2026District 1
31% college gradsR+20.5Held 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 2024.

  1. Amy Binsfeld (R)
    2027– · Won 2026 by 12.4

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