Huckabee Survives Iowa Debate

Only Tancredo lashes out at new Hawkeye State leader in last GOP debate before the caucuses.   Mark Halperin's Grades: Mike Huckabee: A- Fred Thompson: B+ John McCain: B Rudy Giuliani: B Mitt Romney: B Tom Tancredo: B- Ron Paul: C+ Duncan Hunter: D Alan Keyes: F   Read Halperin's full debate report cards here.   Des Moines Register's David Yepsen: Thompson big winner, Huckabee and Romney did just fine.   Plus: Yepsen trashes his own paper's debate.