Dione Michelle Sims is a 2026 Democratic candidate for Texas' 25th Congressional District. She is the granddaughter of Dr. Opal Lee, known as the 'Grandmother of Juneteenth.' Sims has a background as a software quality development director and currently serves as president and founder of Unity Unlimited, Inc., a nonprofit focused on unity, understanding, and social justice. She has been instrumental in organizing major community initiatives with her grandmother, including the National Juneteenth Museum in Fort Worth and annual Juneteenth celebrations. Sims earned a bachelor's degree from Texas Wesleyan University in 1989 and has worked as an information technology professional.
Fort Worth resident and granddaughter of Dr. Opal Lee, the 'Grandmother of Juneteenth.' Graduated from Southwest High School and earned a bachelor's degree from Texas Wesleyan University in 1989. She has worked as an information technology professional and software quality development director. She is the president and founder of Unity Unlimited, Inc., a nonprofit organization focused on unity, understanding, and social justice. Since 2015, she has co-produced the Annual Juneteenth Fort Worth Celebration and engineered the 'Opal's Walk' campaign that led to Juneteenth becoming a federal holiday in 2021. She grew up in a family legacy of civil rights activism through her grandmother's work.