Oklahoma State Senate seat · lines in effect since 2022

Oklahoma Senate District 21

A district of about 81,000 people, 35% of adults with a bachelor's degree. It votes R+30.6 relative to the nation for president.

Where it sits among all 35 seats

Every Oklahoma 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+30.68th most
Democratic
Most DemocraticMost Republican18th seat · the majority lineDistrict 21

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.

2020
U.S. SenateR+25.0

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 35 seats. Small marks are other seats in Oklahoma. The black marker is District 21.

Adults with a bachelor's degree35% 91st pct · 4th of 35 in OK

Higher than 91% of seats.

White adults without a degree51% 41st pct · 21st of 35 in OK

Lower than 59% of seats.

Hispanic residents6% 26th pct · 26th of 35 in OK

Lower than 74% of seats.

Black residents3% 50th pct · 18th of 35 in OK

Higher than 50% of seats.

Asian residents4% 82nd pct · 7th of 35 in OK

Higher than 82% of seats.

People per square mile129 65th pct · 13th of 35 in OK

Denser than 65% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET