99chambers

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

Indiana's 1st District

A district of about 753,000 people, 27% of adults with a bachelor's degree. It votes D+2.3 relative to the nation for president.

Frank J. Mrvan (D) · since Jan 3, 2021Next election Nov 7, 2028The 2026 race →
IN-1

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.

D+2.3203rd most
Democratic
Most DemocraticMost Republican218th seat · the majority line7IN-15249368

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 raceD+7.0No race
GovernorNo raceD+8.2No race
U.S. HouseD+5.7D+8.5D+25.8

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-1.

Adults with a bachelor's degree27% 22nd pct · 6th of 9 in IN

Lower than 78% of seats.

White adults without a degree45% 67th pct · 8th of 9 in IN

Higher than 67% of seats.

Hispanic residents17% 61st pct · 1st of 9 in IN

Higher than 61% of seats.

Black residents18% 79th pct · 2nd of 9 in IN

Higher than 79% of seats.

Asian residents1% 17th pct · 8th of 9 in IN

Lower than 83% of seats.

People per square mile559 60th pct · 2nd of 9 in IN

Denser than 60% 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. 1 of the 4 flipped this year.

MI-8
25% college gradsR+1.0Held DIL-17
25% college gradsD+6.0Held DIL-13
32% college gradsD+10.7Held DOH-10
32% college gradsR+7.4Flipped D

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. Frank J. Mrvan (D)
    2023– · Won 2022 by 5.7, 2024 by 8.5, 2026 by 25.8

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