It's a critical time for the former Massachusetts governor to make his case, in part because he faces unfriendly territory in the weeks following Super Tuesday. Romney has struggled in the South — Gingrich is leading in polls in Georgia and the race is close in Tennessee — and next up after voting this week are contests in Alabama and Mississippi as well as Kansas.
Romney's advisers say the primary process has made the former Massachusetts governor a better candidate.
"It's toughened him up," Fehrnstrom said. "He's a little bit under the weather today, but he's battling right to the last hour to win Ohio and talk about his pro-jobs message. He's a fighter and he's going to be plugging away until the last vote is counted."
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