Former Mayor Harvey Johnson, Jr., Jackson City Council member Tony Yarber and attorney Regina Quinn have announced they will be running in the April 8 special election to complete the term of the late Chokwe Lumumba.
Lumumba died Feb. 25 at age 66 from what the Hinds County coroner described as natural causes.
Johnson lost a bid for re-election in the 2013 Democratic Primary. Quinn also ran in last year's mayoral race. Yarber has been a member of the city council since 2009.
State Sen. John Horhn told The Associated Press that he's also running, and will formally announce his bid Wednesday.
To qualify, candidates must file petitions with signatures of at least 50 registered voters by March 19.
The nonpartisan special election will be held April 8. A runoff, if necessary, would be April 22.