99chambers

U.S. House seat · lines in effect since 2026

Texas's 37th District

A district of about 775,000 people, 36% Hispanic, 55% of adults with a bachelor's degree. It votes D+59.4 relative to the nation for president.

Greg Casar (D) · from Jan 3, 2027Next election Nov 7, 2028The 2026 race →
TX-37

Source: 2026 results: Texas Secretary of State; 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+59.417th most
Democratic
Most DemocraticMost Republican218th seat · the majority lineTX-3718303329207162834352315243295381710213127222531262624143681113119

Labels below the bar mark 37 other seats in Texas.

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.

2026
U.S. HouseD+67.5

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

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Texas Secretary of StateUpdated 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 Texas. The black marker is TX-37.

Adults with a bachelor's degree55% 95th pct · 1st of 38 in TX

Higher than 95% of seats.

White adults without a degree15% 14th pct · 28th of 38 in TX

Lower than 86% of seats.

Hispanic residents36% 86th pct · 16th of 38 in TX

Higher than 86% of seats.

Black residents8% 50th pct · 27th of 38 in TX

Higher than 50% of seats.

Asian residents6% 74th pct · 10th of 38 in TX

Higher than 74% of seats.

People per square mile2,851 83rd pct · 6th of 38 in TX

Denser than 83% 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.

CO-1
28% Hispanic · 57% college gradsD+58.9Held DVA-8
20% Hispanic · 66% college gradsD+52.5Held DMA-7
23% Hispanic · 50% college gradsD+67.2Held DCA-30
24% Hispanic · 51% college gradsD+42.3Held 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 2026.

  1. Greg Casar (D)
    2027– · Won 2026 by 67.5

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