David Brock Leaves Clinton Super PAC Over 'Political Hit Job'

A Hillary Clinton ally has resigned from his post as board member at a major Clinton super PAC because of what he calls sabotage, according to a report.

Politico reports that David Brock stepped down from his position at Priorities USA on Monday. Brock accused Priorities officials of waging "an orchestrated political hit job" against his two pro-Clinton groups, American Bridge and Media Matters.

The accusations stemmed from a recent New York Times story that questioned the fundraising practices of Brock's two groups and another pro-Clinton organization, Ready for Hillary. Priorities has denied having anything to do with the story.

Politico obtained a copy of a letter Brock sent to the Priorities board's co-chairs, former Michigan Gov. Jennifer Granholm and former Obama campaign manager Jim Messina, which detailed his accusations.

Brock said Priorities is trying to do damage to his groups and their fundraising efforts for Clinton's potential 2016 presidential run, "while presumably enhancing Priorities' own. Frankly, this is the kind of dirty trick I've witnessed in the right-wing and would not tolerate then. Our Democratic Presidential nominee deserves better than people who would risk the next election — and our country's future — for their own personal agendas.

"Current and former Priorities officials were behind this specious and malicious attack on the integrity of these critical organizations."

All of the groups are driven by the same goal — seeing Hillary Clinton become the next president — but they are constantly jostling for position in the competitive fundraising market.

"[A] serious breach of trust between organizations that are supposed to work together toward common ends has created an untenable situation that leaves me no choice but to resign my position," Brock wrote, according to Politico.

Brock began his career in the Washington, D.C. media in the 1980s. He was a conservative, "right-wing hit man," in his own words, before migrating to the left in in the late 1990s.

Brock was named to the Priorities board in early 2014 after the organization began beefing up its team for a possible Clinton White House run.

Brock spearheaded a $40 million effort to derail Republican presidential nominee John McCain in 2008.

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