The union in question is The National Treasury Employees Union. According to the web site of the NTEU, the mission of the union is “To organize federal employees to work together to ensure that every federal employee is treated with dignity and respect.” That’s a tall order, in part because there are so very many federal employees. The NTEU’s web site includes a nifty interactive graphic that shows you just how many there are in each state: 279,622 in Texas, for example, 350,544 in California, 165,943 in New York, etc., etc. There are, in short, millions of them.And what political party do you suppose they support? In the 2012 election cycle, 94% its PAC contributions went to Democrats, 4% to Republicans. That’s only one year, of course. How about 2010? That year 98% of its contributions went to Democrats, 2% went to Republicans. 2008 was a bit more balanced: that year only 96% went to Democrats. As Andrew Stiles pointed out at National Review, the NTEU is a “powerful, deeply partisan union whose boss has publicly disparaged the Tea Party and criticized the Republican party for having ties to it.”