Update: in the past few days it's become clear that there was substantial voter fraud in a district in North Carolina. But it wasn't individual, in-person voter fraud, it was party campaign workers working on absentee or mail-in ballots, either (a) intercepting them before they ever reached the voters, filling them in and filing them so the voters themselves couldn't vote in-person, (b) getting blank ballots from the voters and filing them, or (c) getting filled-in-but-not-sealed ballots from the voters and either filing them or not depending on the vote. And it wasn't evil Democrats inflating the Democratic candidate's numbers, it was evil Republicans inflating the Republican candidate's numbers.

All of which doesn't tell us anything about whether we need to crack down on voter ID at the polls, because that wouldn't have had any effect on this scheme. It does suggest we need to improve security for absentee and mail-in ballots, which (as mentioned above) are used disproportionately by white people.