CHICAGO (AP) — As they awaited a vote that could end Chicago's first teachers strike in 25 years, teachers were balancing their desire to get back to class with lingering doubts and questions about a proposed contract that could mean major changes to their pay and job security.

Chicago Teachers Union President Karen Lewis said she expected union delegates to have a possibly lengthy debate when they reconvene Tuesday afternoon, two days after refusing to end the strike because they hadn't seen all the contract details.

Union leaders say trust has become a critical factor, given the strained relations with Mayor Rahm Emanuel and the school board, and that Emanuel's effort to get a judge to order the teachers back to class could become an obstacle.