The margin was cut by half the next week, but he declined to seek a recount.
"I didn't serve overseas in the Marines just to come home to N.C. and watch a criminal, bankrolled by my opponent, take away people's very right to vote", McCready said.
Multiple voters said in interviews that they handed over their ballots - some of which were not fully filled out and were left unsealed - to people who showed up at their doors and offered to collect them. Absentee ballots in North Carolina require two witnesses' signatures.
Specifically there are allegations in Bladen County that absentee ballots were illegally stacked in favor of Harris.
Dowless earned more than $23,000 working on six campaigns dating back to 2010, and in most of those races, Dowless' candidates received a disproportionately higher percentage of absentee votes in Bladen County.
Boyd also listed Dowless' office address when she dropped off over 230 voter registration forms at the Robeson County Board of Elections in September, according to board records reviewed by HuffPost.
"Today, I withdraw my concession to Mark Harris", McCready said in a tweet on Thursday. The Harris campaign and Red Dome founder Andy Yates didn't respond to an email seeking comment.
The allegations of election fraud in North Carolina's 9th Congressional District are now supported by a devastating amount of evidence. Harris said last week that his victory should be finalized while the board investigated. As I noted yesterday, the Constitution and the Federal Contested Elections Act of 1969 gives the House a range of options in dealing with such a challenge, including ordering a new election or just flat-out certifying McCready as the victor and seating him instead of Harris.
Entertaining the idea of a new election represents a significant change from last Thursday, when state GOP Chairman Robin Hayes issued a statement saying: "Democrats are throwing everything, including the kitchen sink, at the wall to try and steal an election".
In recent days, amid mounting allegations of a ballot-harvesting operation, state Republicans have shifted their rhetoric.
Leading House Democrat Steny Hoyer on Tuesday said his party may not seat Harris if the election remains in question when Democrats take control of the lower chamber in January.
"The House Administration Committee will have full investigative authority to determine the victor of the election", Pelosi added.
It's "bigger than that one seat", she said, pointing to the overall "integrity of elections".
The state elections board plans to hold a hearing later this month and could order a new election. They repeatedly cast the situation in political terms, asserting that any voting irregularities were not widespread enough to change the outcome of the election.
Woodhouse defended Harris, calling him a "good man" and said there's "no way he knew about this stuff and sanctioned it".