As of this moment, Lt. Gov. Win Rockefeller (R) is the only one so far to announce hs candidacy. Other possible GOP candidates are Former Homeland Security Secretary Asa Hutchinson (R), and State Senator Jim Holt (R).
Only two Democrats have been mentioned as possible candidates. Attorney General Mike Beebe, and Ret. Gen Wesley Clark.
I'll try and keep up with this when more news is avaliable.