Texas State Senate seat · lines in effect since 2022
Texas Senate District 15
A district of about 1,014,000 people, 42% Hispanic, 42% of adults with a bachelor's degree. It votes D+27.3 relative to the nation for president.
2024 election
Nov 5, 2024Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 31 seats
Every Texas 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
19 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 2022 | |||
| 2024 | Cook (D) | Trahan (R) | 23.8 |
| 2022 | John Whitmire (D) | George Brian Vachris (R) | 30.7 |
| Lines first used in 2012 | |||
| 2018 | John Whitmire (D) | Randy Orr (R) | 33.0 |
| 2014 | John Whitmire (D) | Ron Hale (R) | 20.7 |
| 2012 | John Whitmire (D) | Bill Walker (R) | 24.7 |
| Lines first used in 2002 | |||
| 2010 | John Whitmire (D) | Bill Walker (R) | 18.6 |
| 2006 | John Whitmire (D) | Angel Delarosa (R) | 26.0 |
| 2002 | John Whitmire (D) | Michael P. Wolfe (R) | 20.7 |
| Lines first used in 1992 | |||
| 2000 | John Whitmire (D) | Warren A. Lawless (R) | 30.1 |
| 1996 | John Whitmire (D) | Thomas V. Kelly (R) | 24.1 |
| 1994 | John Whitmire (D) | — | Unopposed |
| 1992 | John Whitmire (D) | Thomas V. Kelly (R) | 44.2 |
| Lines first used in 1982 | |||
| 1990 | John Whitmire (D) | — | Unopposed |
| 1986 | John Whitmire (D) | — | Unopposed |
| 1982 | John Whitmire (D) | Marshall Martin (R) | 26.9 |
| Lines first used in 1972 | |||
| 1980 | Jack Ogg (D) | Richard Parker (R) | 12.5 |
| 1976 | Jack Ogg (D) | Sid Bowers (R) | 20.0 |
| 1972 | Jack Ogg (D) | Howard D. Moon (R) | 11.1 |
| Lines first used in 1962 | |||
| 1968 | Henry C. Grover (R) | William H. Stinson (D) | 44.6 |
Primaries: 2014 Democratic primary · 1982 Democratic primary · 1980 Republican primary · 1980 Democratic primary · 1972 Republican primary · 1972 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 15
The state's districts in other chambers that share residents with this one, and the share of District 15's area in each.
Who lives here, compared
Grey bars show the spread of all 31 seats. Small marks are other seats in Texas. The black marker is District 15.
Higher than 80% of seats.
Lower than 87% of seats.
Higher than 70% of seats.
Higher than 93% of seats.
Higher than 73% of seats.
Denser than 97% 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 1649% Hispanic · 33% college gradsD+22.2Not up in 2026District 14
31% Hispanic · 59% college gradsD+48.5Not up in 2026District 26
66% Hispanic · 26% college gradsD+25.4Held DDistrict 13
39% Hispanic · 37% BlackD+50.8Held 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