Allegations of fraud have been tied to Black Fork Strategies, a left-wing Ohio firm committed to ‘building long-term progressive power.’Earlier this year, Cincinnati-area voters Cassandra and Harry Scott were puzzled to receive voter registration updates showing they had changed their address. They hadn’t. The Hamilton County Board of Elections had received two registration forms for the voters from Black Fork Strategies LLC, an Ohio-based “engagement firm that focuses on all aspects of community and electoral field work.” Elections Board staff made the requested changes in the voter rolls and, per Ohio law, sent notice to the voters at their “new...