The Arizona senator subsequently resumed his familiar position as a political underdog, riding the Straight Talk Express and taking advantage of free media such as debates and sponsored events. By December 2007, the Republican race was unsettled, with none of the top-tier candidates dominating the race and all of them possessing major vulnerabilities with different elements of the Republican base electorate. McCain was showing a resurgence, in particular with renewed strength in New Hampshire—the scene of his 2000 triumph—and was bolstered further by the endorsements of "The Boston Globe", the "New Hampshire Union Leader", and almost two dozen other state newspapers, as well as from Senator Lieberman (now an Independent Democrat). McCain decided not to campaign significantly in the January 3, 2008, Iowa caucuses, which saw a win by former Governor of Arkansas Mike Huckabee.