[Hoot Gibson]

More evidence that Trump cannot even manage a national political campaign. Mr. Kellems' tenure may have ended before he collected his first paycheck.

Donald Trump hit by campaign shakeup just 3 weeks before convention speech

DENVER — Just three weeks before he is set to officially claim the Republican presidential nomination, Donald Trump was hit with another staff shakeup as his campaign struggles to expand in advance of what is expected to be a bruising general election campaign against Hillary Clinton.

Kevin Kellems, a veteran GOP strategist and former aide to Vice President Dick Cheney, abruptly resigned from the Trump staff Thursday, less than two weeks after he was hired to help oversee the campaign’s surrogate operations. Erica Freeman, another aide working with surrogates, also quit.

“While brief, it has been an interesting experience, and I am proud of the contributions made to our early-phase project endeavors,” Kellems wrote in a goodbye note to colleagues.

The campaign did not respond to a request for comment.

The latest departures come as Trump has tried to steady a campaign operation that has been shaken by internal drama and outside turmoil, including the candidate’s own missteps. Those include Trump’s racially tinged comments about a federal judge and his response to the Orlando shooting that many Republicans say have distracted from his general election argument against Clinton.