New state-by-state polls found that in Iowa, Huckabee is now leading former Massachusetts governor Mitt Romney by 12 points, garnering 32 percent of respondents' support, The Kansas City Star said Sunday.
Those polls also found that Huckabee has edged out Rudy Giuliani in South Carolina, earning 20 percent of respondents' votes compared with the former New York City mayor's 17 percent.
Romney earned 15 percent in the South Carolina polls, while former Sen. Fred Thompson, R-Tenn., garnered 14 percent.
Former Sen. John Edwards, D-N.C., remains in third in Iowa with 21 percent of respondents' votes.
The polls found Clinton is also leading in South Carolina, garnering 28 percent of respondents' support to Obama's 25 percent.
The Star said Clinton also earned the top spot in New Hampshire with 30 percent of the votes, while Romney was the top Republican candidate with 25 percent.