reviewing currently. reporter: voters like aubrey atkinson say mccrae dallas showed up at his door to help him fill in his absentee ballot. i had to get them to spell it out to me because i can t read and write. reporter: he can t remember who he voted for. laci allison had help, too. he remembers voting for sheriff, but not for congress. what about the congressional race, a guy named harris and a guy named mccreaty? i don t remember which one, but i remember there were two names. reporter: jake, mark harris, the republican candidate who won this race, denies any knowledge of illegal behavior done on his behalf. but it turns out he may have at least indirectly paid for some of that behavior. mark harris campaign paid a that group hired this fella named mccrae dallas. as for dallas, he continues to ignore our calls for comment. jake? all right, drew griffin,
carolina s ninth congressional district. and apparently it s even worse than many thought. cnn has learned potentially more than 1,000 absentee ballots may have been purposely destroyed and some republican operatives may have taken partially completed absentee ballots from voters and filled out the rest. this is where republican candidate mark harris edged out mccreaty. there was a challenge today issued saying it s time to hold a new election in north carolina s tainted ninth district. cnn s drew griffin is in new york for us. drew, how strong of a case are investigators building here? reporter: well, we don t know exactly, jake. but what we do know is this investigation has been going on for nearly a year. and it s not just involving the vote fraud allegations, but also campaign finance operations behind it. all of this, as you say, bringing into question the outcome and the validity of north carolina s ninth district congressional race.