Washington will become the first state to offer voter registration via Facebook with a new application to be launched as soon as next week, according to a state election official.

Once online, the app will be accessible on the secretary of state's Facebook page, said Shane Hamlin, co-director of elections for the state.

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Washington, which has approximately 3.7 million registered voters, conducts elections entirely by mail and enacted online registration in 2008. Since online registration started, Hamlin said close to 500,000 voter registrations or address changes have been processed.