Priorities USA Action, the primary super PAC backing Hillary Rodham Clinton in the 2016 presidential race, secured $14.5 million in commitments in July, according to a person familiar with the total, nearly as much as the $15.7 million it raised in the first half of the year.

The pledges indicate that the group is continuing to make inroads among Democratic donors who had been reluctant to donate big checks -- either because of their distaste for super PACs or their sense that there is not yet an urgent need to finance the operation.

The new team running Priorities, lead by Democratic strategist and former Clinton campaign aide Guy Cecil, has been working to persuade wealthy liberal donors that the group must ramp up, noting that the super PAC backing former Florida governor Jeb Bush has amassed an eye-popping $103 million.

Priorities struggled to secure funding for much of this year, new campaign filings show, pulling in less than $1 million by the end of March. In the end, most of its checks flooded in during the final days of the fundraising period: $1 million from retired banker Herbert Sandler on June 24; $1 million from hedge fund manager George Soros, $500,000 from producer J.J. Abrams and $250,000 from investor Marc Nathanson on June 25; $1 million a piece from director Steven Spielberg and DreamWorks Animation chief Jeffrey Katzenberg on June 26; $2 million from longtime Clinton supporters Haim and Cheryl Saban on June 29; and $1 million from hedge fund manager Donald Sussman on June 30.

Along with its own fundraising, the super PAC now plans to solicit donors jointly with Correct the Record, another pro-Clinton super PAC that is coordinating directly with her campaign. The arrangement will allow contributors to write one check to a new joint fundraising committee called American Priorities '16.  Eighty percent of each donation will go to Priorities, while Correct the Record will get 20 percent, up to $200,000. The agreement, which was first reported by the New York Times, suggests that tensions over fundraising that erupted publicly between Priorities officials and Correct the Record founder David Brock earlier in the year have abated.