Bloomberg’s massive advertising and ground-game spending, which began roughly a month ago, has thrown Trump into a defensive crouch across the arc of Sunbelt states. As a result, the president‘s campaign has scaled back its TV ad buys in crucial Northern swing states like Wisconsin, Pennsylvania and Michigan — a vacuum being filled by a constellation of outside political groups backing Joe Biden.

“It’s forced the Trump campaign to retrench in Florida. You can see it in the spending habits, in television and digital. They’re investing more at the expense of places they need to win,” said Steve Schale, who leads the pro-Biden Unite the Country super PAC.

“Basically, Trump has now been committed to the equivalent of land war in Asia by having to spend so much of his money in Florida, a state he has to win to get to 270 Electoral College votes,” Schale said. “And as a result, he doesn’t have the resources to compete everywhere he would like.”