Possible evidence of voter fraud in a North Carolina House election is rocking the state. While investigating claims that absentee ballots were tampered with in a tight congressional race, North Carolina officials noticed many were signed by the same small group of people — some of whom are connected to a longtime operative working for the GOP candidate’s campaign. North Carolina requires witnesses, typically relatives or friends, to sign absentee ballots. But 161 absentee ballots shared the same small group of witnesses, many who apparently know each other. A common connection runs through Leslie McCrae Dowless, an operative who worked for the campaign of Mark Harris, the Republican who leads the race by 905 votes.