This story was being updated with more information as it was unfolding.  Claims from users on the anonymous messageboard 4Chan went viral on Saturday evening, as people said they discovered a way that ballots can be cancelled online in Washington — and that an Oregon voter’s registration can be changed, using just the voter’s name…

Source: 4Chan Users Claim to Have Found Way to Easily Change People’s Voter Registration and Cancel Ballots Online in Oregon and Washington