99chambers

Texas House of Representatives seat · lines in effect since 2022

Texas House District 66

A district of about 243,000 people, 20% Asian, 65% of adults with a bachelor's degree. It votes R+13.0 relative to the nation for president.

Matt Shaheen (R) · since May 27, 2014Next election Nov 7, 2028The 2026 race →

Where it sits among all 150 seats

Every Texas House of Representatives 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+13.078th most
Democratic
Most DemocraticMost Republican76th seat · the majority lineDistrict 66

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
Texas House of RepresentativesR+20.8R+22.2R+10.9

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 150 seats. Small marks are other seats in Texas. The black marker is District 66.

Adults with a bachelor's degree65% 96th pct · 7th of 150 in TX

Higher than 96% of seats.

White adults without a degree20% 46th pct · 81st of 150 in TX

Lower than 54% of seats.

Hispanic residents13% 2nd pct · 147th of 150 in TX

Lower than 98% of seats.

Black residents9% 47th pct · 80th of 150 in TX

Lower than 53% of seats.

Asian residents20% 97th pct · 6th of 150 in TX

Higher than 97% of seats.

People per square mile1,719 56th pct · 66th of 150 in TX

Denser than 56% 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.

District 61
61% college gradsR+13.5CountingDistrict 26
25% Hispanic · 60% college gradsR+14.7CountingDistrict 65
53% college gradsR+14.5Held RDistrict 28
29% Hispanic · 50% college gradsR+15.9Flipped 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. Matt Shaheen (R)
    2023– · Won 2022 by 20.8, 2024 by 22.2, 2026 by 10.9

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