The 1964 Washington gubernatorial election took place on November 3, 1964, between incumbent Democratic governor Albert Rosellini and Republican nominee Daniel J. Evans.
Rosellini, a former state senator, was elected governor in 1956 and re-elected in 1960; he had become unpopular after a series of scandals and increasing partisan division in the state legislature. Evans was a member of the state house of representatives and became the minority leader for the Republicans.
Despite the state's favoring of Democrats in national elections in 1964, Evans won by a large margin using a "Blueprint for Progress" as a cornerstone of his campaign. John Patric unsuccessfully ran in the blanket primary.
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Text from the Wikipedia article “1964 Washington gubernatorial election”, available under CC BY-SA 4.0.