It's going to happen eventually. Might as well be 2016.
OC will be PVI neutral by 2024.
I'm getting the growing feeling that November will be brutal for Trump, and even down-ballot Republicans up and down the entire West Coast...
During the Dem primaries, I posted some detailed breakdowns of county and precinct level numbers, and noted the collapse of Hillary primary support from '08 to '12 in more heavily blue-collar regions of "downstate Oregon", as well as among largely industrial working-class areas in Metro-Portland.
At this point, I'm leaning towards the opinion, that not only will Republican support completely bottom-out in suburban Portland, but additionally middle and upper-middle class California retirement areas in Southern and Central Oregon will swing heavily Democrat as well (Jackson, Curry, Deschutes in particular).
Additionally, I suspect that Hillary will manage to hold downstate White-Working-Class Obama '08 voters in Coos, Columbia, Douglas, and Linn counties that voted heavily Bernie in the primaries, with minor defections to 3rd party candidates.
Furthermore, in the most heavily Republican parts of the state in Eastern Oregon, I wouldn't be surprised to see a significant Democratic swing in heavily Latino counties like Malheur and Umatilla.
