Vice Mayor Roxanne Qualls - who was Cincinnati's mayor in the 1990s - will formally announce her candidacy in the 2013 mayoral race Thursday morning in Walnut Hills.
The current mayor, Mark Mallory, who is term-limited out in 2013, will accompany Qualls at a gathering at a pottery factory on Gilbert Avenue in Walnut Hills.
Mallory's 2009 campaign manager, Jens Sutmoller, will run Qualls' 2013 bid for the mayor's office.
One other candidate, also a Democrat, has announced his candidacy for mayor - former council member John Cranley.
Others are expected to join the race. If more than two candidates file petitions by the June deadline, a mayoral primary will take place in September, with the top two vote-getters facing off in the November election.