Probably this but in this scenario Cal Cunningham beats Tillis and the Senate is 51-49 instead of 50-50. Also Biden does better in WI/MI/PA here so his win is more decisive
Is there any actual evidence that particulary affects the vote in NC?
Tbh, I think the difference would be marginal here, though Dems may hold a few more seats in the House.
It would be an overall uplifting of Biden, NC is impacted because it's the closest Trump state.
Biden would have his largest gains in MN, WI, MI, even OH (nowhere near enough to flip it though). AZ would be easier to call as well. The George Floyd riots unintentionally raised racial tension and division nationwide, so Biden does better with white voters here.