Aldermanic candidates for the 40th Ward: Incumbent Ald. Patrick O’Connor, left, and Andre Vasquez.

In 2015, 40th Ward Ald. Patrick O’Connor easily won re-election. But the second-longest-serving member of the Chicago City Council is now in one of the most contentious runoff races in the city. He and challenger Andre Vasquez join us.

 Mayoral candidates Lori Lightfoot, left, and Toni Preckwinkle appear on “Chicago Tonight” on March 21, 2019.

The back-and-forth over political donations during Thursday’s forum was the latest in a series of contentious public appearances between Chicago mayoral candidates Lori Lightfoot and Toni Preckwinkle.

 Mayoral candidates Lori Lightfoot, left, and Toni Preckwinkle appear on “Chicago Tonight” on May 14, 2018 and Oct. 16, 2017, respectively.

Mayoral candidates Lori Lightfoot and Toni Preckwinkle join us for a special edition of “Chicago Tonight” moderated by Phil Ponce and featuring a live studio audience. Watch the full video online.

Aldermanic candidates for the 43rd Ward: Incumbent Ald. Michele Smith and Derek Lindblom.

In a North Side ward adjacent to the proposed site of the controversial Lincoln Yards development, two candidates fight for the 43rd Ward aldermanic seat. Incumbent Ald. Michele Smith and Derek Lindblom join us.

Aldermanic candidates for the 30th Ward: Incumbent Ald. Ariel Reboyras and Jessica Gutierrez.

Ald. Ariel Reboyras has represented the 30th Ward since 2003 and is now facing Jessica Gutierrez, the daughter of former U.S. Rep. Luis Gutierrez, in his first runoff election.

City treasurer candidates Melissa Conyears-Ervin and Ameya Pawar participate in a “Chicago Tonight” forum on March 18, 2019.

Following a three-way battle to replace outgoing Treasurer Kurt Summers in the Feb. 26 election, Chicago voters will have to choose between two candidates in the April 2 runoff.

Aldermanic candidates for the 33rd Ward: Rossana Rodriguez Sanchez, left, and incumbent Ald. Deborah Mell.

A community activist and the incumbent daughter of a City Council dynasty face off ahead of the April 2 runoff election.

Aldermanic candidates for the 5th Ward appear on “Chicago Tonight” on March 13, 2019: Incumbent Ald. Leslie Hairston and William Calloway.

As Chicago voters prepare to head back to the polls, our series of forums continues with 5th Ward candidates Ald. Leslie Hairston and William Calloway.

Aldermanic candidates for the 16th Ward: Stephanie Coleman, left, and incumbent Ald. Toni Foulkes.

We launch our aldermanic runoff forums with a reprise of the 2015 matchup in the 16th Ward between Stephanie Coleman and incumbent Ald. Toni Foulkes.

Paul Vallas, Willie Wilson, Toni Preckwinkle, Bill Daley and Susana Mendoza appear on “Chicago Tonight” on Monday, Feb. 18, 2019.

Northwestern University communications professor Jason DeSanto breaks down the performance of Chicago mayoral candidates during a series of televised forums. 

Chicago mayoral candidates Garry McCarthy, Gery Chico, Amara Enyia, La Shawn Ford and Lori Lightfoot appear on “Chicago Tonight” Tuesday, Feb. 19, 2019.

If the mayoral candidate forum Monday was punctuated by testy exchanges between Susana Mendoza and Bill Daley, Tuesday’s crew of five candidates – moderated by Carol Marin – kept it mostly civil.

Join us Tuesday at 7 p.m. for our third and final mayoral candidate forum, moderated by Carol Marin. Watch on WTTW11 or live on Facebook and YouTube.

Paul Vallas, Willie Wilson, Toni Preckwinkle, Bill Daley and Susana Mendoza appear on “Chicago Tonight” on Monday, Feb. 18, 2019.

With a little more than one week left until the election for Chicago mayor, five of the perceived front-runners amped up their rhetoric in WTTW’s second of three candidate forums.

Join us Monday at 7 p.m. for the second of three mayoral candidate forums, moderated by Phil Ponce. Watch on WTTW11 or live on our website, Facebook and YouTube.

Paris Schutz moderates a forum with, from left, mayoral candidates Jerry Joyce, Neal Sales-Griffin, Bob Fioretti and John Kozlar on Thursday, Feb. 14, 2019.

Chicago Tonight kicked off its series of forums Thursday with four of the 14 candidates vying to be Chicago’s next mayor: Jerry Joyce, Neal Sales-Griffin, Bob Fioretti and John Kozlar.

In less than two weeks, 14 candidates will appear on the ballot for mayor of Chicago. The first in our series of three mayoral candidate forums kicks off with four of those candidates.