I believe it was only recently that Skagit could be considered a split. It was solidly red and the last remaining one nestled in the middle of the more populated and wealthier liberal counties to the north and south of it. Although Whatcom county used to be more red until Bellingham's population increased dramatically in the eighties and nineties. Skagit County's population growth remains flat compared to Whatcom county and counties to the south but, you are correct in the last dozen or so years, more people are commuting to the south for work. Still Skagit County has always held its own amongst the wealthier counties and its economy remains agricultural based.