Taylor W. Anderson for The Bulletin:

Richardson told The Bulletin in an email that he’s been sought out as a candidate for “every statewide position on the 2016 ballot,” but he has no intention of running.

I had been hearing rumors suggesting he would run, but this seems pretty final. Don't expect to see Richardson on the 2016 ballot. Also more info about the other potential candidates.

Democratic Gov. Kate Brown has yet to announce a potential bid for election to the final two years for Kitzhaber’s term. Lake Oswego Republican Allen Alley has said he’s “seriously considering” entering the race for governor. William Ames Curtright, a Republican from Marion County who has run long-shot statewide campaigns in the past, has also established a gubernatorial campaign account.