Updated Oct 16, 2026, 2:28 PM ET
Democratic · 3 November 2026

Dione Sims

Dione Sims is the Democratic nominee for Texas's 25th congressional district in 2026, facing Republican incumbent Roger Williams in a district that redistricting redrew for that election.

2026 Races & Market Forecast

Live TruthIndex™ and prediction market consensus for races contested by Dione Sims.

Latest coverage

Live News

Recent media coverage for Dione Sims.

  1. House Speaker Mike Johnson calls RGV Congressional seats as key to House majority

    The article covers House Speaker Mike Johnson’s stop in McAllen, Texas, highlighting the Rio Grande Valley (RGV) as a pivotal battleground for control of the House.

  2. A remapped district all but securing his seat, Rep. Castro focuses on immigration reform and flipping the House

    The article profiles Rep. Lloyd Castor? (likely Lloyd Doggett? No: the provided content mentions Castro, a Texas representative) focusing on his re-election prospects in a remapped district and immigration reform…

    sanantoniomovingreport.comAustinBaez
  3. School vouchers, THC divide race for Texas House District 52

    Source focus: KUT Radio covers Texas House District 52 race (Round Rock area) between Democrat Chris Jimenez and Republican incumbent Caroline Harris Davila.

    KUTJacksonShepard
  4. Meet the Republican mounting a longshot bid to topple Rep. Joaquin Castro

    The article profiles a Republican candidate challenging Democratic Rep. Joaquin Castro in Texas’ CD-20 (San Antonio area).

    thesanantonio.orgBaez

Biography & Campaign Analysis

2026 race

Dione Sims is the Democratic nominee in the 2026 election for Texas's 25th congressional district, which runs from northern Arlington and southern and eastern Fort Worth out to exurban and rural areas south and west of Fort Worth, including Cleburne, Granbury and Stephenville.

Redistricting placed two incumbents in the district, Republican Roger Williams and Democrat Marc Veasey, and Veasey decided to pursue a short-lived bid for Tarrant County judge. Sims won the Democratic primary with 60.5% of the vote, defeating William Marks.

In the November 3, 2026, general election Sims faces Williams, the Republican nominee, who was re-elected unopposed in 2024.