So benchmark is saying turnout in Portland is terrible. It might not hold though, people have till the end of the day to turn in there ballots.
I'm not sure how accurate that really is. Through yesterday, 46.8% of eligible Dems had returned their ballots statewide. Multnomah was at 43.9%, which is lower, but not dramatically. That's slightly higher than Clackamas's 43.2% and slightly below Washington County's 44.8%. Plus Multnomah has more than twice as many returned ballots as any other county so far.
On the other hand, Benton County (OSU) was sitting at 55.4% and Lane County (Eugene) was at 50.6%, both of which should be strong Sanders territories. Marion County (Salem), which might be more pro-Clinton, was at 45.2%.