151 unions representing over 90,000 members in Arlington, Belmont, Boston, Brookline, Cambridge, Chelsea, Everett, Lexington, Lincoln, Malden, Medford, Melrose, Needham, Newton, Revere, Somerville, Stoneham, Waltham, Watertown, Wellesley, Weston, Winchester, Winthrop, and Woburn.
