Ironworkers Local Union Number Three is endorsing Democratic Dan Lavallee.
25-hundred members make up the union.
Lavallee is the only person left on the democratic side to run against the incumbent.
Union leadership says they made the endorsement because of Lavallee's commitment to working class values.
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.