I'll not attempt any sort of running report on candidate filing. Too many of them to track coherently in this format. But I'll take note as the spirit moves. Meanwhile, the secretary of state will be keeping a running list. How often it will be updated, I can't say.
UPDATE: They're slow on the page linked above that will carry full candidate information. But they're quickly posting on their Facebook page (with a picture of Charlie Daniels every time) one line entries on filers. Also on their Twitter page.
UPDATE II: Mostly pre-announced filings today. A new name turns up on Dem side for 1st District Congress, Terry Green of Mountain Home.
Also, as expected, L.T. Simes of Helena-West Helena, suspended without pay for judicial ethics violations and facing further proceedings, has filed again for his seat.