In discussing the Shawn Tan case, Matt McCarten almost drops the EPMU in it.
The EPMU is a highly political union with deep roots and formal affiliation to the Labour Party. It was a founding member and regularly puts its union affiliation to a vote of its members. Rex Jones was the Labour Party president in the late 1980s while heading the union.
Union head Andrew Little is a popular fancy to replace Mike Williams as Labour Party president after the election.
Perhaps someone should tell the Electoral Commission.