The Great America PAC has spent $9.3 million on ads supporting Trump, more than any other outside group this cycle. | Getty Great America PAC still struggling to attract major donors The group's own officers were paid handsomely.

One of the super PACs vying for Donald Trump's mantle is still struggling to gain traction with major Republican donors.

The biggest contribution to the Great America PAC in July came from Charles Johnson, the main owner of the San Francisco Giants and former chairman of Franklin Resources, for $100,000. Staney Hubbard, the Minnesota broadcasting billionaire and one of the few GOP mega-donors to go to bat for the Republican nominee, gave $50,000. Robert Bishop, a Connecticut hedge fund manager, gave $75,000.


Donors have been wary of the group because of questions about its management and confusion about which super PAC has the campaign's blessing as its designated big-money vehicle. Still, the Great America PAC has spent $9.3 million on ads supporting Trump, more than any other outside group this cycle.

The PAC paid co-chairman Eric Beach, a California-based operative, $9,407 for expenses in July. Ed Rollins, the former Reagan campaign manager who is advising the group, made $15,750, equivalent to a $189,000 annual salary. DB Capitol Strategies, the firm of treasurer Dan Backer that has run several PACs criticized for taking contributions but scarcely supporting candidates, received $11,148.

A rival super PAC called Rebuilding America Now appeared to have the endorsement of Paul Manafort when he was Trump's campaign chairman, but its role is less clear after Manafort's resignation this week. Robert Mercer, a hedge fund billionaire who has backed Trump's new campaign chief executive, Steve Bannon, has converted a super PAC he initially funded to support Ted Cruz to instead attack Democratic nominee Hillary Clinton.

In July, Mercer gave $2 million to another super PAC called Make America Number 1, which was formerly a pro-Cruz PAC called Keep the Promise I. It paid $256,157 to Cambridge Analytica, a data firm tied to Mercer, for ads against Clinton.