The filing period for the May primary has opened, with candidates for all state offices and legislative seats up for reelection. The Secretary of State's Office posted filings as of noon, and there are quite a few early birds that signed up today.
Dave Olson, an independent who also ran in 2006 for the First Congressional District seat, earning 6,857 votes and losing to Bill Sali, has registered to challenge Rep. Walt Minnick (should he file). State Rep. Russ Mathews of Idaho Falls is running against Rep. Mike Simpson (should he file) in the Second CD.
You can check the list obsessively yourself.
The filing period ends March 19 at 5 p.m.