WEST PALM BEACH, Fla. -- With a week to go before the Jan. 31 Florida Republican presidential primary, the polls suggested a tight race.

Although both criticized President Barack Obama in campaign stops Wednesday in Florda, Mitt Romney and Newt Gingrich also focused on the primary now seven days distant.

Romney has long led in the state's polls, but Gingrich's upset victory last Saturday in South Carolina revitalized his candidacy and raised questions about the former Massachusetts governor's staying power.

Former Pennsylvania Sen. Rick Santorum is also on the ballot, as is Texas Rep. Ron Paul.

That gives Florida the feel of a two-man race, and Romney and Gingrich are treating it that way. The two men sparred heatedly Monday night in a debate that virtually relegated Santorum and Paul to supporting roles.

A second debate is set for tonight at 8 on CNN in Jacksonville. And if their separate appearances during the day on the Spanish-language television network Univision is a guide, it will be as feisty as the first.