Some of Marin’s local races have tightened as ballots continue to be counted. Marin County voter registrar Lynda Roberts said that as mail-in ballots become prevalent in post-pandemic elections, the first night’s results offer nothing more than a “snapshot.” Supervisor Damon Connolly is now just five points ahead of opponent Sara Aminzadeh in their contest for state Assembly District 12, his commanding Election Night lead slipping as more ballots are processed. He is still nearly…