BOISE -- Idaho Republican Gov. C.L. Butch Otter is officially running for a third term.
Otter filed his declaration of candidacy Monday with the Secretary of State's Office.
In a statement, Otter says he wants to continue to make Idaho the best place in America to live, work and raise a family.
The former congressman has been widely expected to seek re-election.
He faces a primary challenge from state Sen. Russ Fulcher, a conservative lawmaker from Meridian who says he disagrees with Otter's decision to establish a state-run health insurance exchange under the federal Affordable Care Act.
Running as a Democrat is Anthony Joseph A.J. Balukoff.