Serves in the Texas Senate District 6 in Harris County and was first elected in a 2018 Special Election.

In 2008, she was elected to the Texas House of Representatives and served five terms representing District 145. She served as the Chair of the Urban Affairs Committee and Co-Chair of the Select Committee on Transparency in State Agency Operations.

Serving as the U.S. Representative for Texas's 30th congressional district since January 2023. She earned a B.A. in Business Administration from Rhodes College in 2003 and a J.D. from the University of Houston Law Center in 2006. Crockett began her legal career as a public defender in Bowie County, Texas, and later established her own law firm, focusing on civil rights and criminal defense. Prior to Congress, she represented Texas's 100th district in the State House from 2021 to 2023. In the 118th Congress, she was elected as the Democratic freshman class representative and serves on the House Judiciary and Oversight and Accountability Committees. 

 a Democratic member of the Alabama Senate, representing the 20th District since 2006. Previously she was a member of the Alabama House of Representatives from 2003 through 2006.

Represents the 97th legislative district in the Alabama House of Representatives. She was first elected on May 21, 2013 to fill an unexpired term. She was elected to four-year terms in 2014 and 2018. She is a Democratic Party Whip in the House and chairs the Policy Committee of the House Democratic Caucus. She was named a “Legislator of the Year” by the Caucus in 2017. In November 2019, she was named one of 30 “Women Who Shape Alabama” by Birmingham Magazine. She was chosen for introducing the legislation and working diligently to get Alabama’s Equal Pay Act passed by the Alabama Legislature.