- Delaware State Education Association
- Delaware State Chamber of Commerce
- Delaware State Troopers Association
- AFSCME (American Federation of State, County and Municipal Employees) Council 81
- Correctional Officers Association of Delaware
- Delaware Building and Construction Trades Council
- Delaware State AFL-CIO
- Fraternal Order of Police Lodge 15
- Communication Workers of America Local 13101
- International Brotherhood of Electrical Workers Local 313
- United Food & Commercial Workers Local 27
