Cleaners, porters and matrons of theater union SEIU Local 32BJ demonstrate outside the Broadway League's office on Wednesday, Dec. 12, 2012, in New York. The union representing hundreds of Broadway theater cleaners, porters, elevator operators and bathroom attendants voted Wednesday to authorize its leaders to call a strike if a new contract isn't approved by the end of the month, (AP Photo/Bebeto Matthews)

Associated Press
Cleaners, porters and matrons of theater union SEIU Local 32BJ demonstrate outside the Broadway League's office  on Wednesday, Dec. 12, 2012, in New York. The union representing hundreds of Broadway theater cleaners, porters, elevator operators and bathroom attendants voted Wednesday to authorize its leaders to call a strike if a new contract isn't approved by the end of the month, (AP Photo/Bebeto Matthews)
Cleaners, porters and matrons of theater union SEIU Local 32BJ demonstrate outside the Broadway League's office on Wednesday, Dec. 12, 2012, in New York. The union representing hundreds of Broadway theater cleaners, porters, elevator operators and bathroom attendants voted Wednesday to authorize its leaders to call a strike if a new contract isn't approved by the end of the month, (AP Photo/Bebeto Matthews)
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