Mark is proud to be endorsed by the following groups for re-election in 2019:
Political Parties and Other 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
- Good Government Club 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
- Teamsters Local 264
- Int. Assoc. of Firefighters Local 282 (BFD)