Evan Vucci, Associated Press
SAN JUAN, Puerto Rico — The Republican presidential contest rumbled into Puerto Rico Wednesday as a two-man race, with Rick Santorum nipping more aggressively at Mitt Romney's heels after again frustrating the front-runner in Southern primaries.
Former House Speaker Newt Gingrich, with little to show for pinning his hopes on the South, nonetheless vowed to stay in. His deputy campaign manager outlined a strategy aimed at denying Romney a clean win before the Republican convention in August and making Gingrich's case to delegates along the way.
But after winning Tuesday's primaries in Alabama and Mississippi, Santorum called for the party's faithful to unite behind him alone.
"Now is the time to pull together," Santorum declared to conservatives in Lafayette, La. "We are campaigning everywhere there are delegates because we are going to win this nomination before the convention."
Unbowed, Romney issued a statement noting his strong lead in the delegate race, saying, "I am pleased that we will be increasing our delegate count in a very substantial way after tonight." Earlier Tuesday, in an interview with CNN, Romney had said Santorum was "at the desperate end of his campaign."
Romney fared better in the night's two Pacific island contests. He salvaged a win in the Hawaii caucuses and won the support of all nine delegates at GOP caucuses in American Samoa. That means Santorum's two latest wins gain him little or no ground in the delegate count, despite their symbolic weight coming after his victories last week in Tennessee and Oklahoma.
The race now turns to Missouri's caucuses Saturday and Puerto Rico, which is reaping unusual attention before its primary Sunday. Illinois follows on Tuesday and Louisiana on March 24.
Santorum flew to San Juan fresh off his Southern victories, and planned events over the next two days. Romney wasn't slated to arrive in the U.S. territory until the end of the week, after spending two days in New York City to raise money.
Romney's seemingly unassailable delegate lead left his opponents' campaigns talking about less orthodox ways to stop him. John Brabender, senior strategist for the Santorum campaign, said many of the delegates weren't bound and could still switch their votes to Santorum.
Suggesting it's time for Gingrich to make way, Brabender told CNN Wednesday morning that the message was going out to tea party and conservative voters: "Let's make sure our voice is louder than the minority of the party who wants Mitt Romney."
Tuesday night's results marked the continuation of a long, hard-fought Republican nomination fight — and underscored Romney's persistent weakness with conservatives, particularly in the GOP's regional stronghold of the Deep South. Together, Santorum and Gingrich accounted for huge majorities of votes in Alabama and Mississippi, prompting Gingrich to crow: "The fact is, in both states, the conservative candidates got nearly 70 percent of the vote. If you're the front-runner and you keep coming in third, you're not much of a front-runner."
Romney had been hoping for at least one Southern victory Tuesday that might have allowed him to start arguing it was time for the party to gather behind him and begin the general election fight against President Barack Obama.
Instead, Romney now faces a resurgent Santorum — and he is without the overwhelming financial advantage he boasted throughout the early states. Romney's campaign trimmed some spending in recent weeks as he was forced to spend more time campaigning and less time fundraising. Still, he's got more delegates than his rivals combined.
Santorum's victories Tuesday were worth at least 35 delegates, but Romney won at least 41. Gingrich won at least 24, while Ron Paul picked up at least one. The delegate split underscored the difficulty that Romney's rivals face in overcoming his big lead.
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