For the 89th General Assembly, he will serve on the Education Committee and the Aging, Children & Youth, Legislative and Military Affairs Committee.

Rep. Armstrong earned his degree in biology and chemistry from the University of Arkansas Pine Bluff. He is a retired educator who previously served on the Little Rock School Board. Rep. Armstrong also serves on the Arkansas Non-Point Source Groundwater Taskforce, Arkansas State Grievance Panel, Volunteers in Public Schools program, Pulaski County Democratic Party, Arkansas National Guard Officers Association, and previously served as president of the Farm Worker Protection Committee for the Association of American Pesticide Control Officials.

Rep. Armstrong has received medals for his achievement in the U.S. Army and was recognized by Region 6 of the Environmental Protection Agency as an Outstanding State Participant of the Year.