Washington state has 350 volunteers canvassing the greater Seattle area, working with (publicly available) official voter rolls. Their policy is to be clear about being nonpartisan volunteers, however some residents claims volunteers claimed being county workers.
WA has 4.8 million voters. During the 2016 and 2018 elections WA identified 216 cases of possible fraud.
Two county auditors said the bulk of questionable voter names brought to their attention … so far appear to be valid military and overseas voters, who are allowed by federal law to vote at their last registered address or at the address of a family member.