(Undated)  --  A new report shows Oregon is not one of the best states in the nation for millennials.  Finance-and-lifestyle website WalletHub.com has compared the 50 states and the District of Columbia to determine where millennials have thrived and withered, using factors ranging from unemployment rate to voter-turnout rate.  Oregon is listed as number 31 among the best states for millennials, scoring relatively high in "quality of life," but getting low marks in "affordability" and "economic health."  North Dakota is ranked the nation's best state for millennials, Washington is 12th, and West Virginia is ranked last.