Thus far, courts and state and local election officials have not discovered evidence of extensive voter fraud in enough numbers to reverse the results of the election.
Gregory Stenstrom performed with two other sworn witnesses to canvassing irregularities days after swearing about his experiences at a hearing held by Republican state legislators last week.
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Stenstrom told Hannity that as a certified poll watcher in Delaware County, he saw "at least 24" instances of USB drives being uploaded to computers in a Chester canvassing building without any external oversight.
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Stenstrom testified at the hearing that he had used Election Day watching polling sites across the county and had been given the impression things were "well in hand" in Chester, with "10 to 20" Republican poll watchers monitoring the count.
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Though, he told the panel that when he came to the "remote" counting center at 6 p.m., he was helpless in gaining access for close to five hours.
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Stenstrom told host Sean Hannity that the USB drives at the counting center contain data from precinct scanners and are followed by ballots from election judges in many precincts, then uploaded to computers in a central location for overall tabulation.
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"Those USB sticks are all supposed to come back with the ballots, with the cartridges and paper tapes ... into the voting center," he said. "What we found was a bunch of baggies that came in [and the] USB sticks and the paper tapes and the cartridges were all taken apart and commingled."
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Stenstrom told Hannity that the best way to explain the situation was a "forensically destructive process." He had beforehand testified that he saw envelopes taken from ballots and located at one end of the counting room and added that any recount made in an effort to certify the validity of the vote tally would be ineffective.
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"The notion of a recount in a forensically destructive process doesn't work very well," he said at the hearing, explaining that in a 125,000-ballot recount, with 102,000 votes initially being recorded for Biden and 18,000 votes counted for President Trump, a recount would provide the same results, but without the extra layer of confirmation of the validity of the ballots themselves.
"What I saw was a chain of custody in all cases that was broken," he told the panel.
On "Hannity," Stenstrom recalled that the morning after Election Day, he witnessed the voting warehouse supervisor "24-plus times with 24 sticks, actually, uploading votes from USB sticks," he continued. "I objected, I brought senior law enforcement over, we brought the clerk of elections over."