Donald Trump’s true believers are losing the faith.

As Trump struggles to keep his campaign promises and flirts with political moderation, his most steadfast supporters — from veteran advisers to anti-immigration activists to the volunteers who dropped their jobs to help elect him — are increasingly dismayed by the direction of his presidency.

Their complaints range from Trump’s embrace of an interventionist foreign policy to his less hawkish tone on China to, most recently, his marginalization of his nationalist chief strategist, Steve Bannon. But the crux of their disillusionment, interviews with nearly two dozen Trump loyalists reveal, is a belief that Trump the candidate bears little resemblance to Trump the president. He’s failing, in their view, to deliver on his promise of a transformative “America First” agenda driven by hard-edged populism.

"Donald Trump dropped an emotional anchor. He captured how Americans feel," said Tania Vojvodic, a fervent Trump supporter who founded one of his first campaign volunteer networks. "We expect him to keep his word, and right now he's not keeping his word."