The following are the endorsements Senator O'Connor has received during his run for re-election.

Massachusetts Teachers Association

American Federation of Teachers- Massachusetts 

Boston Teachers Union

                                                     Massachusetts Police Association                                                       

New England Police Benevolent Association

Boston Police Patrolman's Association

Mass Retirees

Massachusetts Correction Officers Federated Union

Environmental League of Massachusetts

National Federation of Independent Business

Massachusetts Voters for Animals

Massachusetts Nurses Association

Professional Fire Fighters of Massachusetts (PFFM)

Weymouth Fire Local 1616

National Association of Government Employees - Service Employees International Union

Bricklayers & Allied Craftsmen Local 3

Boston Carmen's Union 589

United Brotherhood of Carpenters & Joiners of America Local 346

International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers Local 7

International Brotherhood of Electrical Workers Local 103

International Association of Machinist and Aerospace Workers Local 264

Massachusetts Organization of State Engineers and Scientists

Plumbers & Gasfitters Local 12

Roofers & Waterproofers Local Union No. 33

Sheet Metal Workers’ International Association Local Union No. 17

Sprinkler Fitters and Apprentices Local 550

Laborers' International Union of North America- Local 133

Massachusetts & Northern New England Laborers' District Council

Norfolk Central Labor Council

Plymouth- Bristol Central Labor Council







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