Mark is proud to be endorsed by the following groups for re-election in 2019:

Political Parties and Organizations:

• Erie County Democratic Committee
• Working Families Party
• Erie County Association of Democratic Town Chairs
• West Seneca Democratic Committee
• Lackawanna Democratic Committee
• Evans Democratic Club
• Stonewall Democrats of WNY

Labor Unions and Related Organizations:

• Buffalo Building Trades Council
• Elevator Constructors Local 14
• International Union of Operating Engineers Local 17
• International Brotherhood Of Electrical Workers Local 41
• U.A. Plumbers and Steamfitters Local 22
• PEF – New York State Public Employees Federation, AFL-CIO
• International Union of Painters & Allied Trades of America and Canada – District Council #4
• Western New York Area Labor Federation
• 1199 SEIU – United Healthcare Workers East
• United Auto Workers – Region 9
• United Steelworkers – Region 4 and National Organization
• WNY Communications Workers of America Council
• Faculty Federation – Erie Community College – FFECC
• Buffalo Teachers Federation
• The Buffalo Police Benevolent Association – Buffalo P.B.A.
• W.N.Y. Teamsters Joint Council No. 46
• Ironworkers Local Union No. 6
• CSEA Local 815
• Brotherhood of Locomotive Engineers and Trainmen
• Amalgamated Transit Union Local 1342