President Trump stopped all of his television and radio advertising in three states and substantially reduced it in four others in recent weeks after his lackluster fundraising left him unable to match a surge in spending by his Democratic challenger, Joe Biden.

Trump’s retreat from Ohio, Iowa and New Hampshire reflects his struggle to change the dynamics of a race that polls suggest he is on track to lose. In the six weeks since his party’s national convention, Trump’s campaign has yanked more than $17 million in ads he’d previously booked in those states…

“It seems the Trump campaign has reached the point where they have to do some triage,” said Travis Ridout, co-director of the Wesleyan Media Project, which tracks political ads. “They don’t seem to have enough money to run ads everywhere.”…

“If you are Trump’s campaign manager, you never expected to find yourself in this situation this late in the campaign, where the Democrat has a lot more money,” said Linda Fowler, professor emerita of government at Dartmouth College in New Hampshire.