SEIU Unions Endorse Alexi Giannoulias for Chicago Mayor

Two major labor unions have officially thrown their support behind the mayoral campaign of Alexi Giannoulias.

Updated on Oct. 23, 2026 in Unions

Bold flat-color editorial illustration of a city clock tower silhouette, representing political and labor institutional weight in Chicago. — SEIU Local 1 and Local 73 officially endorsed Alexi Giannoulias in the Chicago mayoral race, citing his commitment to labor protections. AI Illustration. Upload story photo >

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SEIU Local 1 and SEIU Local 73 announced their endorsements for Alexi Giannoulias in the Chicago mayoral race. The two organizations cited his history of supporting worker-focused policies as the primary driver for their decision.

Why it matters

The support from two major labor groups represents a significant boost for the candidate. Both unions highlighted the need for leadership that prioritizes workers' rights and economic expansion for the local community.

SEIU Local 1 currently represents more than 30,000 workers throughout the Chicago area. The endorsement remains a formal expression of support for the mayoral campaign.

The players

SEIU Local 1

This labor organization represents more than 30,000 workers across the Chicago area and advocates for labor rights.

SEIU Local 73

This union is a labor group that represents public service and municipal workers within the Chicago region.

Alexi Giannoulias

He is a political figure currently running for the office of Mayor of Chicago.

The details

The announcement confirms that SEIU Local 1 and SEIU Local 73 are aligning their political resources with the campaign of Alexi Giannoulias. Leaders from the unions expressed that their choice was based on the candidate's track record of strengthening labor protections.

The unions announced their support for the campaign on October 22, 2026.

Political Context

Opposing campaigns often argue that concentrated union support creates an undue influence on municipal policy, potentially clashing with the interests of small business owners or non-unionized sectors. These critics emphasize that mayoral candidates should prioritize a broader coalition beyond organized labor blocs.

For the average resident, these endorsements signal which mayoral candidate may prioritize union-backed initiatives if elected. Voters should consider how such policy commitments might impact future city budgets and public sector service delivery.

The takeaway

Labor endorsements often serve as a bellwether for voter mobilization and organizational support in local elections. Chicago residents can look at the track records of these union-endorsed candidates to better understand their potential policy focus on labor rights.