My guess- churches, and the Common Sense push-polling group.
When you have a group like Common Cause with lots of $$ - they do the work for you...add that to the churches..
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Huckabee criticized over groups' calls
SPARTANBURG, S.C. -- Former Arkansas Gov. Mike Huckabee had a popular wrestler and a TV and martial-arts star campaigning with him in South Carolina on Thursday, while his GOP rivals accused him of hitting below the belt.
With the state's Republican presidential primary on Saturday, the campaign grew nasty as former Sen. Fred Thompson of Tennessee and Arizona Sen. John McCain accused Huckabee's campaign of conducting push polls -- calls disguised as polls that are intended to spread false information about a candidate's opponents.
Thompson charged that a group with links to Huckabee called the Common Sense Foundation was making calls and distorting his record on abortion. Thompson is anti-abortion.
McCain's campaign said Wednesday that it, too, has been the target of abortion push-poll calls by a group called Common Sense Issues, which performed calls on Huckabee's behalf in Iowa. When asked about the push-poll charges, the Huckabee campaign directed reporters to a news release on its Web site that was posted Wednesday.
"As I've said before, our campaign has nothing to do with push polling, and I wish they would stop," Huckabee said in the release."
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Also, I think Ed Rollins is a pretty dirty, no holds barred campaign lead. I can see Huck telling him: do what you do .. just don't tell me.