99chambers

Tennessee House of Representatives seat · lines in effect since 2022

Tennessee House District 78

A district of about 63,000 people, 25% of adults with a bachelor's degree. It votes R+47.2 relative to the nation for president.

Mary Littleton (R) · since Nov 6, 2012Next election Nov 7, 2028The 2026 race →

Where it sits among all 99 seats

Every Tennessee 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+47.260th most
Democratic
Most DemocraticMost Republican50th seat · the majority lineDistrict 78

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
Tennessee House of RepresentativesR+47.3R+48.2R+28.3

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 99 seats. Small marks are other seats in Tennessee. The black marker is District 78.

Adults with a bachelor's degree25% 42nd pct · 58th of 99 in TN

Lower than 58% of seats.

White adults without a degree67% 71st pct · 29th of 99 in TN

Higher than 71% of seats.

Hispanic residents5% 37th pct · 63rd of 99 in TN

Lower than 63% of seats.

Black residents2% 21st pct · 78th of 99 in TN

Lower than 79% of seats.

Asian residents1% 23rd pct · 76th of 99 in TN

Lower than 77% of seats.

People per square mile126 29th pct · 71st of 99 in TN

Less dense than 71% 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 8
28% college gradsR+51.1Held RDistrict 32
24% college gradsR+53.2Held RDistrict 39
21% college gradsR+53.4Held RDistrict 25
21% college gradsR+58.7Held 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. Perry Keenan (R)
    2027– · Won 2026 by 28.3
  2. Mary J. Littleton (R)
    2023–2027 · Won 2022 by 47.3, 2024 by 48.2

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