99chambers

U.S. House seat · lines in effect since 2022

Indiana's 8th District

A district of about 753,000 people, 23% of adults with a bachelor's degree. It votes R+35.4 relative to the nation for president.

Mark B. Messmer (R) · since Jan 3, 2025Next election Nov 7, 2028The 2026 race →
IN-8

Source: 2026 results: Indiana Election Division and civicAPI; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House 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+35.4392nd most
Democratic
Most DemocraticMost Republican218th seat · the majority line71524936IN-8

Labels below the bar mark 8 other seats in Indiana.

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
U.S. SenateNo raceR+31.8No race
GovernorNo raceR+26.4No race
U.S. HouseR+34.2R+38.5R+10.6

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

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

Who lives here, compared

Grey bars show the spread of all 435 seats. Small marks are other seats in Indiana. The black marker is IN-8.

Adults with a bachelor's degree23% 9th pct · 9th of 9 in IN

Lower than 91% of seats.

White adults without a degree69% 98th pct · 1st of 9 in IN

Higher than 98% of seats.

Hispanic residents3% 6th pct · 9th of 9 in IN

Lower than 94% of seats.

Black residents4% 27th pct · 8th of 9 in IN

Lower than 73% of seats.

Asian residents1% 9th pct · 9th of 9 in IN

Lower than 91% of seats.

People per square mile92 22nd pct · 9th of 9 in IN

Less dense than 78% 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.

PA-9
23% college gradsR+37.9Held RPA-15
25% college gradsR+38.1Held RWV-2
26% college gradsR+39.9Held RMI-2
23% college gradsR+30.2Held 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 Messmer (R)
    2025– · Won 2024 by 38.5, 2026 by 10.6
  2. Larry Bucshon (R)
    2023–2025 · Won 2022 by 34.2

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