Salena Zito

But Kondik predicts the Republican presidential race could continue "perhaps for a long while, since Ron Paul, at least, seems intent to stay in this thing as long as he can, and Gingrich said over the weekend that he would take the race to the convention in Tampa this summer."

As the race moves forward, the GOP primary calendar favors Romney's strong state-by-state organization, experts say. With no debates scheduled for a few weeks, it will be difficult for the other candidates to penetrate his lead.

Because Florida's delegate allotment is winner-take-all, only Romney padded his number -- to 87, assuming that national party leaders don't cut the state's delegates in half again, for altering the Republican National Committee's primary schedule. Gingrich has 26 delegates; Santorum, 14; and Paul, four.

Still, Romney has only a fraction of the 1,144 delegates he needs to become the nominee.

The winner in Nevada on Saturday will get the largest share of that state's 28 delegates. But the next three contests on Feb. 7 -- caucuses in Colorado and Minnesota, and the Missouri primary -- will be non-binding votes. The candidates won't find out how many delegates they've won until Missouri's caucus on March 17 and party conventions in Colorado and Minnesota, which take place from March through May.

On Super Tuesday (March 6), 10 states representing 437 delegates will vote in primaries and caucuses from Alaska to Virginia. Of those delegates, 385 will be apportioned based on vote totals, and 52 -- many of them state party chairs and national committee members -- can support whomever they wish.

Experts say it's likely a clear winner will emerge before then. Kondik, for one, wonders whether Gingrich or Santorum has the money and organization to eclipse Romney now.

Early last week, when Gingrich headed to Florida with momentum from a surprising win in South Carolina, a skittish Republican establishment in Washington began fearing a prolonged primary process with no consensus candidate. People whispered that a dramatic convention would result, producing an alternative candidate.

That's extremely unlikely, Kondik said.

"Republicans, both in Washington and across the nation, are breathing a sigh of relief," he said. "They believe Romney gives them the best chance to beat Barack Obama in the fall, and the least chance of inflicting damage down the ticket.

"That said, how good of a candidate would Romney be against Obama? The jury's out, and if the economy continues to improve, even slightly, Obama's chances for a second term also get better. Indeed, he seems to be in much better shape now than he was just a few months ago."

Salena Zito

Salena Zito is a political analyst, reporter and columnist.