State Rep. Nikki Randall announced her resignation from the Georgia House of Representatives Thursday, saying she would not seek re-election.
Her term will end in December, although there are only about two weeks left in this year's legislative session.
Former Macon City Council members Miriam Paris and Gerald Harvey, both Democrats, have already signed up to run for her post.
Qualifying ends on Friday.
"It has been an incredible honor to serve the state of Georgia and the citizens of House District 142 as a Georgia state representative for nearly 17 years," Randall, D-Macon, said in a statement. "I have given my all to serve my community, and I will continue to do so when I leave the Georgia General Assembly.
"I am extremely proud of the work I have accomplished alongside my colleagues to improve the lives of Georgians and move Macon forward. After much thought and prayers, I believe my work here is done, and I look forward to the next chapter."
She said she would continue to be involved with politics in Macon-Bibb County.
In Atlanta, it's been a challenge lately for a Democrat to make headway on legislation in a Republican-dominated Legislature. And there have also been clashes within the Bibb County legislative delegation at times.
Earlier this session, for example, Randall lashed out at other members of the delegation -- also a Republican majority. She said they were not working in the best interests of Bibb County residents by not backing a proposal to move the date of Macon-Bibb's mayoral and County Commission elections to November.
"I think we've failed as a delegation," Randall said at a news conference with state Rep. James Beverly, a fellow Macon Democrat.
Randall was elected in 1999 in a special election to fill a seat formerly held by her father, William C. Randall, when he was appointed to the Civil and Magistrate Court of Bibb County.
With that election victory, Randall became a third-generation elected official from the Randall family and the first black woman from Middle Georgia to be elected to the Georgia General Assembly.
She is a former chairwoman of the Bibb County legislative delegation and served as the vice chairwoman of the Georgia House Democratic Caucus.
She now serves on the Health & Human Services, Information and Audits, Insurance, and Judiciary Non-Civil committees.