DES MOINES, IOWA
As Mike Huckabee sat on an upholstered chair at a suburban megachurch Sunday morning, he heard the biblical message about running the race of life and persevering in the face of all challenges.
Heading for his car after the service ended, the former Arkansas governor and onetime Baptist preacher said he had "prayed for strength for the weak."
Five days before the Iowa caucuses, Huckabee could have easily been referring to his presidential candidacy, once the longest of long shots but now on the verge of an improbable upset in the first state in the contest.
Even as the Democratic race in Iowa has become tied in a three-way knot, the Republican race has settled into a head-to-head battle pitting Huckabee against former Massachusetts Gov. Mitt Romney.
Romney, for months the presumptive front-runner in Iowa, has vastly out-spent and out-organized Huckabee, only to see his lead evaporate. Huckabee has held the lead for a month, although polls this weekend showed that the race may be tightening again.
Religion -- Huckabee's, Romney's and Iowa's Republicans' -- is the key to understanding the dynamic fueling the race between the two candidates.
Huckabee has been fervently unabashed in his embrace of evangelical Christianity, a set of beliefs embraced by as many as 40 percent of the people who are likely to turn out for the GOP caucuses Thursday night.