Huckabee is in second place in several national polls.
WASHINGTON (CNN) - Mike Huckabee has jumped into second place nationally in the Republican race for the White House, according to a new poll out Friday - the third national survey this week to indicate the former Arkansas governor's surge is not limited to Iowa.
Huckabee registers support from 18 percent of Republican and Republican-leaning voters in a new AP/Ipsos poll, a number that puts him 6 points behind former New York City Mayor Rudy Giuliani. Arizona Sen. John McCain is in a close third with 13 percent - virtually tied with former Massachusetts governor Mitt Romney at 12 percent and former Tennessee Sen. Fred Thompson at 11 percent.
Huckabee's rise nationally seems to have hurt Thompson the most. A similar survey a month ago had the Tennessee Republican at 19 percent - 8 points higher than his current position.
Huckabee's rise nationally follows his success in the crucial early-voting state of Iowa, where Christian conservatives make up a significant proportion of the state's Republican voters. The onetime Southern Baptist minister has made his conservative stances on social issues a centerpiece of his dark horse campaign and is now virtually tied with Romney there.
– CNN Ticker Producer Alexander Mooney