Click here to see live election results
There are 12 city council seats still undecided, and whose winners will be known after Tuesday night.
WATCH | ABC7 mayoral runoff candidates' debate
Chicago Mayoral Debate: Brandon Johnson, Paul Vallas face off in ABC7 studios
There's been a large turnout for early voting.
As of about 9 a.m., there have been 304,090 total ballots cast, a 19.1% total citywide turnout so far.
Election Day Coverage
Election Day arrives, with voters set to pick either Paul Vallas or Brandon Johnson for Chicago mayor
Nicole Lee, Tony Ciaravino face off for 11th Ward city council seat
Three candidates vie to be first new mayor of Naperville in 8 years
Chris Taliaferror, CB Johnson face off for 29th Ward city council seat
Chicago Mayoral Election
Vallas, Johnson make last-minute push for votes on eve of Election Day
Vallas, Johnson make sprint to the finish in race for Chicago mayor
How Johnson, Vallas differ on dealing with crime and policing
Johnson pays off unpaid city debt; Vallas criticized for Trump comment
Johnson to rally with Bernie Sanders; faith leaders endorse Vallas
Paul Vallas, Brandon Johnson share differing views on public safety
How Chicago's mayoral candidates will manage the city budget
Johnson slammed by Chicago Republican Party for Vallas MAGA signs
Chicago mayor candidates get sharp in debate as poll shows them tied
Mayoral candidates share background in education, but from different sides
Chicago mayoral candidates launch attacks as Election Day nears
Mayoral candidates make last efforts to sway undecided voters
Johnson, Vallas talk community plans, coalitions at mayoral forum
Johnson announces Bernie Sanders rally, Vallas gets more endorsements
Chicago mayor's race a dead heat in latest poll
Vallas, Johnson spar over Foxx's performance, policing in schools
Johnson, Vallas step up attacks as election draws closer
Mayoral candidates attend forum focused on Black, Latino communities
ABC7 Chicago mayoral debate turns heated
Vallas supporters disrupt Johnson presser criticizing education record
Green backs Vallas, Raoul endorses Johnosn in mayoral race
Abortion rights PAC endorses Johnson; Vallas endorsed by Cardenas
Poll shows tight race between Vallas, Johnson
Mayoral candidates' dueling polls show many voters still undecided
Chicago Aldermanic Elections
2 women vie for council seat in city's most diverse ward
Chicago alderman's press conference crashed by defeated opponent
21st Ward candidate claims opponent was untruthful on resume
City council poised for big changes with multiple races up for grabs
Voting and Voter Issues
How to make sure your mail-in ballot is counted in Chicago eleciton
Early voting in Chicago runoff election opens in all 50 wards