99chambers

Kentucky State Senate seat · lines in effect since 2022

Kentucky Senate District 4

A district of about 116,000 people, 17% of adults with a bachelor's degree. It votes R+43.8 relative to the nation for president.

Robby Mills (R) · since Nov 6, 2018Next election Nov 5, 2030The 2026 race →

Where it sits among all 38 seats

Every Kentucky State Senate 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+43.825th most
Democratic
Most DemocraticMost Republican20th seat · the majority lineDistrict 4

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.

2022
Kentucky State SenateR+33.3

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 38 seats. Small marks are other seats in Kentucky. The black marker is District 4.

Adults with a bachelor's degree17% 24th pct · 29th of 38 in KY

Lower than 76% of seats.

White adults without a degree73% 78th pct · 9th of 38 in KY

Higher than 78% of seats.

Hispanic residents3% 24th pct · 29th of 38 in KY

Lower than 76% of seats.

Black residents7% 70th pct · 12th of 38 in KY

Higher than 70% of seats.

Asian residents0% 16th pct · 32nd of 38 in KY

Lower than 84% of seats.

People per square mile67 22nd pct · 30th of 38 in KY

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.

District 14
21% college gradsR+48.1Held RDistrict 2
25% college gradsR+46.8Held RDistrict 1
22% college gradsR+51.2Not up in 2026District 18
KentuckyR+48.6Held 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. Robert M. Mills (R)
    2023– · Won 2022 by 33.3, 2026 unopposed

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