Dione Sims

Dione Sims is the Democratic nominee for Texas's 25th District, challenging Rep. Roger Williams. A software quality development director, community organizer and nonprofit founder, she won the March 3, 2026 primary with 60.5% of the vote. She describes herself as a granddaughter of Dr. Opal Lee and says she is running on living wages, public schools and an economy that works for working people.[1]

Sims graduated from Southwest High School and earned a bachelor's degree from Texas Wesleyan University in 1989, according to Ballotpedia. FOX 4 describes her degree as a business degree and reports that she started a nonprofit called Unity Unlimited in 2000.[1][2] She works in information technology; in her Candidate Connection survey she describes herself as a software quality development director who has led diverse teams of professionals, and as the president and founder of a nonprofit focused on unity, understanding and social justice.[1]

Sims describes herself as the granddaughter of Dr. Opal Lee, whom she calls the Grandmother of Juneteenth. She says she has co-produced the Annual Juneteenth Fort Worth Celebration since 2015 and helped lead the Opal's Walk campaign for national Juneteenth recognition.[1] She says she has served on several boards, and she lists endorsements from Fort Worth officials and the Fort Worth Association of Federated Women's Club.[1] FOX 4 reported in January 2026 that she had entered the race. Sims defeated William Marks in the March 3, 2026 Democratic primary, 60.5% to 39.5%.[2][1]

Researched from the cited sources on 2026-10-21.