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Rudy Giuliani remains the front-runner, yet while his support long has been steady it shows signs of fraying. Huckabee’s growing strength in the South has come as the former New York mayor’s support there has dropped, an Associated Press/Ipsos poll reported. Giuliani was at 26 percent among Republican and GOP-leaning voters, Huckabee has 18 percent, up from 10 percent in an AP-Ipsos survey a month ago and 3 percent in July. John McCain has 13 percent, Mitt Romney 12 percent and Fred Thompson 11 percent. Huckabee’s rise been largely at the expense of Thompson.

The Democratic race showed virtually no change from last month. Hillary Rodham Clinton has about a 2-to-1 lead over Barack Obama, 45 percent to 23 percent, with John Edwards at 12 percent, though a recent AP-Pew poll showed a three-way battle among them in Iowa.