Oklahoma State Senate seat · lines in effect since 2022
Oklahoma Senate District 27
A district of about 79,000 people, 24% Hispanic, 23% of adults with a bachelor's degree. It votes R+75.3 relative to the nation for president.
2020 election
Nov 3, 2020- Casey Murdock (R) · won
Unopposed.
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
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.
Democratic
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 election for this seat
9 races since 1968. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2012 | |||
| 2020 | Casey Murdock (R) | — | Unopposed |
| 2016 | Bryce Marlatt (R) | — | Unopposed |
| 2012 | Bryce Marlatt (R) | Tommy W. Nicholson (I) | 68.9 |
| Lines first used in 2002 | |||
| 2008 | Bryce Marlatt (R) | Bowdy E. Peach (D) | 36.6 |
| 2004 | Owen Laughlin (R) | H. Kathy Moore (D) | 59.2 |
| Lines first used in 1972 | |||
| 1980 | Wayne Winn (D) | Bill Betts (R) | 1.1 |
| 1976 | Ed Berrong (D) | — | Unopposed |
| 1972 | Ed Berrong (D) | — | Unopposed |
| Lines first used in 1962 | |||
| 1968 | Ed Berrong (D) | — | Unopposed |
Primaries: 1976 Democratic primary
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 27
The state's districts in other chambers that share residents with this one, and the share of District 27's area in each.
- U.S. House
- OK-3 100%
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 | 2024 | |
|---|---|---|
| President | R+74.1 | R+74.1 |
| U.S. Senate | R+70.0 | No race |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 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 27.
Higher than 56% of seats.
Lower than 53% of seats.
Higher than 94% of seats.
Lower than 79% of seats.
Lower than 97% of seats.
Least dense of 35 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 38OklahomaR+65.7CountingDistrict 26
23% college gradsR+57.5Held RDistrict 19
22% college gradsR+58.9Not up in 2026District 6
22% college gradsR+63.6Held 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