Note: This live event has ended. Read the results of the race here.
St. Louis is a solidly Democratic city. So, when voters go to the polls today to vote in its Democratic Mayoral Primary - they are really picking the city's presumptive next mayor.
Will it be incumbent mayor Francis Slay? It would be for an unprecedented fourth term. Or Lewis Reed - the president of the Board of Aldermen? Or Jimmie Matthews - a candidate some have said is a "stalking horse?"
Our reporters Chris McDaniel and Tim Lloyd will be posting updates below as information emerges after the polls close at 7 p.m.
For context, you can also check out our extensive collection of reports on the race with everything from candidate profiles to campaign finance charts.