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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 54%

Susana Mendoza 13%

Brandon Johnson 12%

Matt Brewer 9%

Polymarket
NEW

Alexi Giannoulias 54%

Susana Mendoza 13%

Brandon Johnson 12%

Matt Brewer 9%

Polymarket
NEW
icon for Alexi Giannoulias

Alexi Giannoulias

$102 Vol.

54%

icon for Susana Mendoza

Susana Mendoza

$61 Vol.

13%

icon for Brandon Johnson

Brandon Johnson

$18 Vol.

12%

icon for Matt Brewer

Matt Brewer

$20 Vol.

9%

icon for George Cardenas

George Cardenas

$20 Vol.

8%

icon for John Kelly

John Kelly

$41 Vol.

8%

icon for Joe Holberg

Joe Holberg

$20 Vol.

5%

icon for Mike Quigley

Mike Quigley

$20 Vol.

4%

icon for Kam Buckner

Kam Buckner

$20 Vol.

3%

icon for Danielle Carter-Walters

Danielle Carter-Walters

$20 Vol.

3%

icon for Willie Wilson

Willie Wilson

$20 Vol.

3%

icon for Maria Pappas

Maria Pappas

$20 Vol.

3%

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 leads trader consensus at 57% for the February 2027 Chicago mayoral election, reflecting his substantial fundraising edge exceeding $22 million, union endorsements, and high name recognition after his August 2026 campaign launch. Incumbent Brandon Johnson formally entered the race on September 13 amid low approval ratings near 30% and limited campaign cash, while a crowded field including Susana Mendoza at 12.5% and more than a dozen other declared candidates fragments support. The nonpartisan race structure, with a potential April runoff if no one reaches a majority, keeps probabilities tight as early polling and petition drives highlight competition over public safety, fiscal pressures, and economic growth. Upcoming petition deadlines in October and continued fundraising will likely influence positioning before the first-round 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
$381
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 leads trader consensus at 57% for the February 2027 Chicago mayoral election, reflecting his substantial fundraising edge exceeding $22 million, union endorsements, and high name recognition after his August 2026 campaign launch. Incumbent Brandon Johnson formally entered the race on September 13 amid low approval ratings near 30% and limited campaign cash, while a crowded field including Susana Mendoza at 12.5% and more than a dozen other declared candidates fragments support. The nonpartisan race structure, with a potential April runoff if no one reaches a majority, keeps probabilities tight as early polling and petition drives highlight competition over public safety, fiscal pressures, and economic growth. Upcoming petition deadlines in October and continued fundraising will likely influence positioning before the first-round 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
$381
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 54%, followed by "Susana Mendoza" at 13%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 54¢ implies that the market collectively assigns a 54% 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 54%, meaning the market assigns a 54% chance to that outcome. The next closest outcome is "Susana Mendoza" at 13%. 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.