Still, unlike in Michigan, the other state that defied the Democratic National Committee and went ahead with an early primary, the names of Mrs. Clinton, Mr. Obama and a third candidate, John Edwards, a former North Carolina senator, are on the ballots that Floridians saw when early voting started 15 days before the primary and on absentee ballots that were distributed as early as Dec. 15.

The Democratic surge here is hardly taking place in a vacuum. Mrs. Clinton has a network of supporters, including elected officials, who have organized get-out-the-vote efforts and are planning statewide victory parties. One prominent Clinton supporter, Gerald W. McEntee, the president of the American Federation of State, County and Municipal Employees, was headed here this weekend to urge union members to turn out for Mrs. Clinton.

“We have 26,000 members and we probably have a like amount of retirees there,” Mr. McEntee said by telephone. “We are going to have three or four meetings and give our pitch in terms of Hillary Clinton and ask them to be active in the remaining days of the campaign with the specific focus of trying to bring out three our four neighbors next Tuesday.”

Mrs. Clinton is scheduled to fly here on Sunday for two fund-raisers. Although the events are not open to the press or public  her aides said she would attend no public event that would result in her breaking her word  her arrival here the day after the South Carolina vote seems likely to produce coverage on Florida television stations and newspapers on the day before the vote. On Friday, her campaign issued a statement saying that she would urge her delegates at the Democratic convention this summer to seat the Florida delegation.

Even as Mr. Obama’s advisers have sought to play down the results, his campaign has bought television time on national networks that has been hard to miss on Florida television stations. Grass-roots groups who say they are operating independently of Mr. Obama’s headquarters in Chicago have also been organizing across the state, trying to encourage support for him.

Terry Watson, who heads one of the grass-roots groups, said his organization handed out thousands of leaflets promoting Mr. Obama and asked Floridians to vote for him at a Martin Luther King Jr. Day parade in St. Petersburg last Monday. Mr. Watson said his group was “the largest grass-roots organization” in the state and was preparing to help Mr. Obama should he win the presidential nomination.

Mrs. Clinton’s aides are hoping that, delegates or not, the attention paid to a potential big victory in Florida, the nation’s fourth-largest state, if not as prominent as a victory in other states to date, will at least give her a public relations boost heading into Feb. 5, and will mitigate their defeat Saturday in South Carolina.