What happened to Kitzhaber?
He resigned last month amid all the issues with his fiancee's consulting work. Oregon has no lieutenant-governor so the Secretary of State (Kate Brown) was in line to become governor. A special election will be held in Nov 2016 for the remainder of the gubernatorial term elected in 2014.
Brown appointed her replacement this month with
the appointee already announcing they don't plan to run for reelection in 2016. There's also some talk of other Democratic officials considering running for Governor so the primaries might be interesting.