Articles By Kalyn Belsha
Union support is divided between Sanders and Sen. Elizabeth Warren, who also visited Chicago teachers during the strike, members said.
The presidential candidate joined striking teachers in Austin for a rally Tuesday morning.
Bargaining between City Hall and the Chicago Teachers Union ended Saturday night with reports of continued progress on two key issues — class size caps and support staff — but a stall in three other critical areas.
Negotiators remain deadlocked over adding support positions such as nurses and social workers.
Chicago teachers are voting this week on whether or not to authorize a strike, which could happen as soon as Oct. 7.