Mayor Lori Lightfoot speaks during a news conference on Tuesday. [Alex Nitkin/The Daily Line]

The City Council is poised for an impromptu meeting at City Hall Wednesday afternoon as a group of about a dozen police-allied aldermen try to force open a path for the city to soften its employee vaccination requirements. But Mayor Lori Lightfoot will not attend the special meeting, which she called an act of bad faith, and it was unclear Tuesday whether enough aldermen would attend to make a quorum.