After a teachers strike that lasted more than two weeks, Chicago Teachers Union President Jesse Sharkey delivers a statement in front of Richard Yates Elementary School in Humboldt Park on the first day back to school, Friday morning, Nov. 1, 2019. (Pat Nabong/Chicago Sun-Times via AP)

CHICAGO (AP) — Chicago teachers are voting on the tentative contract deal that suspended an 11-day strike.

More than half of the Chicago Teachers Union’s elected delegates backed the agreement on Oct. 30, suspending the strike and letting classes resume.

But the union’s 25,000 members still must vote to accept the deal and officially end the walkout.

Voting begins Thursday and may continue into Friday.

The strike followed months of unsuccessful negotiations between the union, Chicago Public Schools and Mayor Lori Lightfoot’s administration. More than 300,000 students and their families were affected.

The agreement includes a 16% pay raise for teachers during the five-year contract.

The strike also netted $35 million to enforce class size limits and a commitment to put nurses and social workers in every school by 2023.

Chicago Teachers Union and Service Employees International Union members walk to Richard Yates Elementary School together after a teachers strike that lasted more than two weeks, Friday morning, Nov. 1, 2019. (Pat Nabong/Chicago Sun-Times via AP)
Second grade students at Roswell B. Mason Elementary School on the South Side react to a visit from Mayor Lori Lightfoot on the first day back to class after a Chicago Teachers Union strike closed schools for 11 days, Friday morning, Nov. 1, 2019. (Ashlee Rezin Garcia/Chicago Sun-Times via AP)
Students return to class at Roswell B. Mason Elementary School on the South Side after a Chicago Teachers Union strike closed schools for 11 days, Friday morning, Nov. 1, 2019. (Ashlee Rezin Garcia/Chicago Sun-Times via AP)
Students say the Pledge of Allegiance on their first day back to class at Roswell B. Mason Elementary School on the South Side after a Chicago Teachers Union strike closed schools for 11 days, Friday morning, Nov. 1, 2019. (Ashlee Rezin Garcia/Chicago Sun-Times via AP)
Chicago Mayor Lori Lightfoot visits a third grade class at Roswell B. Mason Elementary School on Friday Nov. 1, 2019, in Chiago. Chicago teachers and the nation's third-largest school district reached a labor contract deal on Thursday, ending a strike that canceled 11 days of classes for more than 300,000 students. (Ashlee Rezin Garcia/Chicago Sun-Times via AP)
Students return to class at Roswell B. Mason Elementary School on the South Side after a Chicago Teachers Union strike closed schools for 11 days on Friday Nov. 1, 2019, in Chicago. (Ashlee Rezin Garcia/Chicago Sun-Times via AP)