While social distancing guidelines call for at least 6 feet of space between individuals to avoid exposure to coronavirus, the Biden campaign argued that medical professionals recommend a greater distance of separation for individuals spending longer periods of time next to one another indoors. Pence and Harris are scheduled to face off Wednesday night for a 90-minute debate in Salt Lake City.

Biden campaign officials raised the candidate positioning as a “very serious concern,” according to the source, who said the campaign also cited unease over the lack of mask-wearing enforcement during the presidential debate in Cleveland. The source said the commission and the Trump campaign had supported the 7-foot spacing.

A commission spokesperson did not respond to requests for comment.

Later Friday, Trump campaign spokesman Tim Murtaugh told POLITICO the campaign would work to find middle ground.

“We are open to more space between the candidates, which we will