[Excerpt] Although we will present more detailed data in subsequent sections, we would like to present a few key pieces of information here. Public sector campuses are substantially more likely to be unionized than private sector, with 55.7% of public and 16.8% of private reporting one or more non-faculty bargaining units. Geographically, non-faculty unionization is notably more prevalent in the Northeast, the Midwest and on the Pacific coast than elsewhere. Among non-faculty employees, there are notable variations in unionization rates. Approximately 43.8% of blue collar employees are unionized (substantially more than reported two years ago), compared to approximately 31.1% of white collar employees. Among white collar workers, approximately 40.4% of clericals are represented by unions, compared to approximately 24.4% of professional and technical workers. Although there are many unions active on college campuses, two have emerged as leaders, the State, County and Municipal Employees (AFSCME) and the Service Employees (SEIU).