Mark is proud to be endorsed by the following groups:

• WNY CWA Council
• The Buffalo PBA
• WNY Area Labor Federation
• 1199 SEIU
• Local 282 The Buffalo Professional Fire Fighters
• Laborers Local 210
• The Buffalo Building Trades
• The United Auto Workers
• Stonewall Democrats of WNY
• UAW Region 9
• NYSNA – New York State Nurses Association
• CSEA Local 815
• Public Employees Federation
• Northeast Regional Council of Carpenters