The Seattle Times reported that Hutchinson defeated the interim GOP chair, Luanne Van Werven, in a run-off vote after two other candidates were eliminated Saturday at the party's meeting in Spokane.
Hutchison ran unsuccessfully for King County Executive in 2009, downplaying her Republican ties.
On Saturday, she pledged to breathe new life into a state Republican Party that has suffered stinging election defeats.
Hutchison said the party is "nearly broke," has a "useless" website and a get-out-the-vote operation that is spotty in some places and ineffective in others.
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