Executive Councilor Colin Van Ostern speaks against a plan to expand the Mount Sunapee ski area Wednesday, April 6, 2016, in Concord, N.H. The vote was 3-1, with Van Ostern, a Democrat, voting against the proposal Wednesday. (AP Photo/Jim Cole)
Executive Councilor Colin Van Ostern speaks against a plan to expand the Mount Sunapee ski area Wednesday, April 6, 2016, in Concord, N.H. The vote was 3-1, with Van Ostern, a Democrat, voting against the proposal Wednesday. (AP Photo/Jim Cole) Credit: Jim Cole

By picking up the endorsement of SEA/SEIU Local 1984, Democratic gubernatorial candidate Colin Van Ostern got his 10th endorsement from a labor union on Tuesday.

The 10,000 member State Employees’ Association endorsed the executive councilor Tuesday morning.

Van Ostern has also been endorsed by labor unions including teachers union NEA New Hampshire and the International Brotherhood of Electrical Workers Local 2320.

Democratic challenger Mark Connolly has so far picked up two labor union endorsements. Connolly earned the support of the Professional Fire Fighters of New Hampshire on Monday and the International Brotherhood of Electrical Workers Local 104.