Why is she so unpopular? She's one of the most progressive Governors in the country, in a pretty blue state.
Not every Democrat is a "firebrand progressive". Plus - for such blue state she always won governorship by relatively small margin, so - personality factor may be in play too. But - Republican party of Oregon (party of Mark Hatfield, and. in the past, of Wayne Morse) moved sharply to the right since about 2000, and, usually, nomunates far-right idiots as it's candidates. That's her best chance...