Mitt Romney to the rescue? His former GOP challengers Rick Santorum and Newt Gingrich are both facing millions of dollars of campaign debt, and could be hoping to get help from the Republican party’s top dog. Santorum has debts totaling around $1 million, while Gingrich’s hover around an astounding $4 million. Tim Pawlenty, who dropped out of the GOP race after Iowa, had his campaign debt relieved by Romney after throwing his support behind the former Massachusetts governor. But such a deal could be harder for Santorum or Gingrich, whose supporters—especially those with deep pockets—have been hesitant to support the moderate Romney. Ron Paul, meanwhile, has maintained a balanced campaign budget, ending April with $2.5 million in the bank.