On Monday, representatives from more than 20 unions that have a total of at least 10 million members issued a statement that most of their members are supporters of presidential candidate Hillary Clinton. This announcement comes as a response to the dispute that unionized workers are divided in their support for Clinton and Senator Bernie Sanders. Recently, the AFL-CIO announced that it would not vote on a candidate to endorse during the primaries.
See "Unions Say a Majority of Their Members Support Hillary Clinton", Naom Scheiber, The New York Times, February 22, 2016