Former GOP gubernatorial nominee Ovide Lamontagne is filing today to run for Senate in New Hampshire, adding to an already crowded GOP primary in the Granite State.

“I believe that I can build a coalition that not only can win in the primary but in the general election,” Lamontagne said in a Monday phone interview.

Lamontagne has been exploring a bid for the last couple months, headlining events in both Washington, D.C. and New Hampshire.