Who is backing GOPer Mick Mulvaney in his effort to unseat 5th District Rep. John Spratt? It’s hard to tell who they are in this environment of unbridled corporate funds, but whoever, they have deep pockets and they have been very generous to Mulvaney. Corey Hutchins sorts it out in the Huffington Post: http://www.huffingtonpost.com/corey-hutchins/pelosis-budget-chairman-f_b_742015.html

Call it the national conservative cash-O-matic.

Whether it’s in the form of negative political signs, direct mailers or ominous TV attack ads, right-wing independent organizations have locked on the “Sack Spratt” smoke flares in the 5th District and announced their own presence with the subtly of an air raid.

“You could realistically say that these groups have spent between $750,000 and a million dollars,” said Spratt’s campaign manager Wilson Brown at a community festival in the small town of Indian Land on Sept. 25. He says he’s seen estimates putting the number as high as $1.7 million.

“They’re coming hard on us,” Brown said. “As hard as they can.”

And, they’re coordinating.

FreedomWorks and other like-minded groups are working with Tea Party organizers in the area to help put out signs, said Republican National Committeeman Glenn McCall, who is also a county GOP chairman in Spratt’s district.

“They’re centralized in York County for the 5th District,” McCall said about the groups shortly after a Sept. 17 speech by RNC Chairman Michael Steele at the University of South Carolina.

Steele was in the state as part of his cross-country “Fire Pelosi” bus tour. McCall had ridden on the bus with Steele through the district.

“They’re coordinating,” McCall said about the different groups working to oust Spratt. “They have a big walk coming up… in York County and across the 5th District handing out Mick Mulvaney literature. They’re organized and I’m really impressed with the whole effort….”

As third-party outside special interest groups offer widespread political cover for anti-Spratt movements in the 5th District, Mulvaney also finds himself benefiting from big names in the conservative galaxy when it comes to celebrity and political heft.

The 43-year-old attorney and real estate developer is one of the 20 congressional candidates nationwide that Sarah Palin is backing against Democrats who voted for national health care reform.

And earlier this month, former Republican U.S. House Speaker Newt Gingrich threw his weight behind Mulvaney when Gingrich appeared in South Carolina to hint at a possible 2012 run for president.

Also, a group called the South Carolina District 5 Patriots listed former Republican House Majority Leader and FreedomWorks chairman Dick Armey as a speaker at an August event….