In the Alabama House of Representatives, Jackson has held several committee positions throughout his tenure. Currently, he serves as the Vice Chair of the Urban and Rural Development Committee and is a member of multiple committees including Agriculture and Forestry, Ethics and Campaign Finance, Financial Services, House Local Legislation, Public Safety and Homeland Security, House Rules, and the Legislative Committee on Public Accounts. Previously, he served as the Ranking Minority Member on several committees, including Agriculture and Forestry, Ethics and Campaign Finance, Public Safety and Homeland Security, and Technology and Research.

Jackson's professional background is primarily in education. He has served as the Director of the Upward Bound Program at Alabama Southern Community College, a federally funded program designed to help high school students from low-income families prepare for college. The program provides academic support, counseling, and cultural enrichment activities to help students succeed in higher education. In addition to his role with Upward Bound, Jackson has worked as a professor at the University of South Alabama and taught at various schools including Coffeeville Elementary School, Coffeeville High School, Thomasville Adjustment Center, and Jackson Middle School.

Beyond his educational career, Jackson serves as an Associate Pastor for the Church of God in Christ, demonstrating his commitment to both spiritual and community leadership. The Church of God in Christ is one of the largest Pentecostal denominations in the United States with a predominantly African-American membership.

In his political career, Jackson has faced both contested and uncontested elections. In the 2022 general election, he narrowly defeated Republican challenger Fred Kelley with 51.5% of the vote (9,537 votes) to Kelley's 48.5% (8,981 votes). His previous elections were less competitive, with Jackson winning 97.9% of the vote in the 2018 general election against write-in candidates. His current term ends on November 4, 2026.

Jackson has been active in sponsoring legislation throughout his career. In 2025, he sponsored House Bill 607, which established the Rural Connectivity and Innovation Act to provide grant programs and tax credits in underserved farming communities. He has also sponsored various resolutions, including one congratulating the Jackson High Aggies in 2024.

In his personal life, Jackson is married to Dorothy Jackson, and they have four children- Kimberly, Terence, Thomas III, and Trumaine. Jackson maintains strong ties to his hometown of Thomasville, where he continues to reside and maintain a district office. He is a member of several organizations, including Kappa Alpha Psi fraternity, the National Black Caucus of State Legislators, the Alabama and National Education Associations, and the Kiwanis Club. He has also served as the Coordinator of the Thomasville Precinct for the Alabama Democratic Conference and as a member of the Board of Directors for the Southwest Alabama Boys and Girls Club.

Jackson's educational background includes an Associate of Arts degree from Selma University (1970), a Bachelor of Science in Psychology from Knoxville College (1972), and a Master of Arts in Education and Counseling from Alabama State University (1977). This educational foundation has informed his career in both education and politics, allowing him to serve his constituents with a focus on educational and community development.