Donald Trump’s contributions from small-dollar donors have plummeted since his last White House campaign, presenting the former president with a financial challenge as he tries to keep pace with the Democrats’ fundraising machine.

Fewer than a third of the Republican’s campaign contributions have come from donors who gave less than $200 — down from nearly half of all donations in his 2020 race, according to an analysis by The Associated Press and OpenSecrets, an organization that tracks political spending.