Hadden was sworn in as a member of Chicago City Council on May 20, 2019.
City-wide issues City budget Hadden was one of 11 aldermen who voted against Mayor
Lori Lightfoot's proposed 2020 budget, alongside 8 other members of the
progressive caucus. In a statement about her vote, Hadden stated, "I’m optimistic about the increased investments in housing, mental health care, homelessness prevention and concrete investments in the south and west sides of our city, but remain concerned that we haven’t exhausted all prospects of progressive revenue in order to take greater strides towards a budget that starts to repair decades of harm and inequity." Prior to the vote, Hadden spoke with constituents about the budget at multiple town hall meetings.
Public health Hadden sponsored a "senior safety" ordinance, in collaboration with the Jane Addams senior caucus, that was passed in July 2020. The ordinance requires building managers in senior housing to conduct regular wellness checks on residents.
Environmental issues Hadden was an early co-sponsor of legislation to ban single-use plastics and styrofoam in most restaurants.
Crime On March 19, 2026, Hadden referred to the killing of Sheridan Gorman, an 18-year-old college freshman attending
Loyola University Chicago, as a "wrong place, wrong time" incident. The alleged killer
Jose Medina-Medina is an illegal alien unlawfully residing in the United States. Due to comments Hadden made in response to Gorman's killing, Hadden temporarily closed her office in the 49th Ward on March 26, 2026, due to safety concerns. The team's stated goal is to help Rogers Park residents stay informed and access resources needed amid the
social distancing and
shelter-in-place measures in place during the crisis. They have offered informational resources online, set up a hotline for residents to request advice, and volunteers trained to safely deliver groceries and prescriptions. The Park District installed life rings in Rogers Park in September 2021 and pledged to add additional devices along the lakefront in subsequent months.
Committees During the 2019–23 term, Hadden is a member of eight standing committees in the City Council: economic, capital, and technology development; ethics and government oversight; environmental protection and energy; housing and real estate; human relations and health; special events, cultural affairs, and recreation; zoning, landmarks, and building standards; and committees and rules.
Alliances and relationships In the 2019–23 term, Hadden joined the City Council's
Progressive Caucus,
Black Caucus, and
LGBT Caucus, and pledged to join the council's Women's Caucus. In the 2023–27 term, Hadden serves as the co-chair of the Progressive Caucus. After winning her seat in the first round of the 2019 elections, Hadden endorsed several candidates vying for City Council seats, including
Andre Vasquez, Jessica Gutierrez,
Matt Martin, Robert Murphy,
Rossana Rodríguez Sanchez, Rafa Yañez, and
Jeanette Taylor. She declined to make an endorsement in the
2019 mayoral election, citing her goal of being an independent alderman as well as strong support received by both run-off candidates in the 49th ward in the first round. == Personal life ==