Everyone is forgetting that the Northwest has traditionally been Democratic. This goes back to the Depression.
Republicans dominated Pacific Northwest from 1952-1988
Kennedy barely lost the state, and Carter came fairly close. Both could have won with a little more money/time/focus. And, except for a brief Republican period in 1980-1982, Democrats have controlled at least one branch of the state government since 1956. Your also forgetting it went for Humphrey in 1968.
Oregon had all republican governors from 1939-1987 except from 1957-1959 and 1975-1979.
Oregon went republican every time in those 40 years presidential in every year from 1952-1992 except 1964 and 1988.
Yes, except you made a blanket reference to the "Pacific Northwest". [/grammar Nazi]
Perhaps if you said "lean Republican" there would be more truth to it. Generally when I think of "dominating" I think of OK Republicans and MA Democrats.