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icon for 2027 Chicago Mayoral Election
Politics·Mayor

2027 Chicago Mayoral Election

icon for 2027 Chicago Mayoral Election
Politics·Mayor

2027 Chicago Mayoral Election

Alexi Giannoulias 65%

Susana Mendoza 16%

Brandon Johnson 12%

Kam Buckner 4.8%

Polymarket
NEW

Alexi Giannoulias 65%

Susana Mendoza 16%

Brandon Johnson 12%

Kam Buckner 4.8%

Polymarket
NEW
icon for Alexi Giannoulias

Alexi Giannoulias

$2,138 Vol.

65%

icon for Susana Mendoza

Susana Mendoza

$598 Vol.

16%

icon for Brandon Johnson

Brandon Johnson

$551 Vol.

12%

icon for Kam Buckner

Kam Buckner

$221 Vol.

5%

icon for Maria Pappas

Maria Pappas

$218 Vol.

3%

icon for Matt Brewer

Matt Brewer

$340 Vol.

2%

icon for George Cardenas

George Cardenas

$181 Vol.

2%

icon for Joe Holberg

Joe Holberg

$69 Vol.

1%

icon for Danielle Carter-Walters

Danielle Carter-Walters

$201 Vol.

1%

icon for John Kelly

John Kelly

$222 Vol.

<1%

icon for Mike Quigley

Mike Quigley

$203 Vol.

<1%

icon for Willie Wilson

Willie Wilson

$194 Vol.

<1%

The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027. This market will resolve according to the candidate that wins the election. The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.**Alexi Giannoulias holds the leading position in trader consensus for the February 23, 2027, Chicago mayoral election due to his substantial early fundraising advantage of more than $22 million, broad trade union support, and high statewide name recognition as Illinois Secretary of State.** He formally entered the race on August 2, 2026, emphasizing coalition-building, hiring additional police officers, universal pre-K, a higher minimum wage, and holding the line on property taxes while criticizing incumbent performance on public safety and economic growth. Brandon Johnson’s September 2026 reelection announcement added the sitting mayor to a crowded field that already included Susana Mendoza, Mike Quigley, George Cardenas, Maria Pappas, Matt Brewer, and others. One early entrant withdrew and endorsed Giannoulias. The nonpartisan, multi-candidate primary structure and the possibility of an April runoff keep probabilities fluid until petitions close in late October and clearer polling or endorsements emerge closer to the vote.

The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027.

This market will resolve according to the candidate that wins the election.

The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027. This market will resolve according to the candidate that wins the election. The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.
Volume
$5,133
End Date
Feb 23, 2027
Market Opened
Sep 15, 2026, 1:48 PM ET

Resolver

0x69c47De9D...
The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027. This market will resolve according to the candidate that wins the election. The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.**Alexi Giannoulias holds the leading position in trader consensus for the February 23, 2027, Chicago mayoral election due to his substantial early fundraising advantage of more than $22 million, broad trade union support, and high statewide name recognition as Illinois Secretary of State.** He formally entered the race on August 2, 2026, emphasizing coalition-building, hiring additional police officers, universal pre-K, a higher minimum wage, and holding the line on property taxes while criticizing incumbent performance on public safety and economic growth. Brandon Johnson’s September 2026 reelection announcement added the sitting mayor to a crowded field that already included Susana Mendoza, Mike Quigley, George Cardenas, Maria Pappas, Matt Brewer, and others. One early entrant withdrew and endorsed Giannoulias. The nonpartisan, multi-candidate primary structure and the possibility of an April runoff keep probabilities fluid until petitions close in late October and clearer polling or endorsements emerge closer to the vote.

The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027.

This market will resolve according to the candidate that wins the election.

The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.The 2027 Chicago mayoral election will be held on February 23, 2027, to elect the mayor of Chicago, Illinois. If no candidate receives a majority of the vote, a runoff election will be held on April 6, 2027. This market will resolve according to the candidate that wins the election. The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from the City of Chicago.
Volume
$5,133
End Date
Feb 23, 2027
Market Opened
Sep 15, 2026, 1:48 PM ET

Resolver

0x69c47De9D...

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Frequently Asked Questions

"2027 Chicago Mayoral Election" is a prediction market on Polymarket with 12 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Alexi Giannoulias" at 65%, followed by "Susana Mendoza" at 16%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 65¢ implies that the market collectively assigns a 65% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"2027 Chicago Mayoral Election" is a newly created market on Polymarket, launched on Sep 15, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "2027 Chicago Mayoral Election," browse the 12 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "2027 Chicago Mayoral Election" is "Alexi Giannoulias" at 65%, meaning the market assigns a 65% chance to that outcome. The next closest outcome is "Susana Mendoza" at 16%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "2027 Chicago Mayoral Election" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.