1. United Auto Workers (UAW) 2. Service Employees International Union (SEIU) 3. American Federation of Teachers (AFT) 4. International Brotherhood of Teamsters (IBT) 5. United Steelworkers (USW) 6. Communication Workers of America (CWA) 7. United Food and Commercial Workers (UFCW) 8. American Federation of State, County and Municipal Employees (AFSCME) 9. International Association of Machinists and Aerospace Workers (IAM) 10. National Education Association (NEA)