The White House will make an 11th hour push to rally supporters for the November 6 vote.
The US President will jet to Florida at least twice in the build-up to the elections, it is reported.
Other high-profile GOP politicians will travel to Florida in an attempt to marshal the Republican vote.
A flurry of Republican text messages is also set to be bombard Florida voters who have not yet cast absentee ballots.
In the US mid-term elections voters elect all 435 House of Representative seats and 35 of 100 Senate members, known as Congress.
Thirty six out of 50 state governors are also up for election, including Florida’s.
Both Congress houses are currently controlled by Mr Trump’s Republican Party.
Vice President Mike Pence and senior White House counselor Kellyanne Conway raced to the state on Thursday to support Florida’s Governor Rick Scott, who is running for Senate this year.
Republican candiate Ron DeSantis is locked in a close battle with Democrat Andrew Gillum for the Governor’s seat.
Some recent polls suggest Mr DeSantis and Mr Scott are trailing to their Democratic rivals.
Mr Gillum, the mayor of Tallahassee, has accused Mr DeSantis of getting “Neo-Nazis” to help him and of speaking at racist conferences.
White House Republican strategists fear defeat in the governor’s race could impact the party’s ability to raise money and hire staff in the run-up to the 2020 presidential elections.
The Republican’s House of Representative candidate Ross Spano also faces a fierce battle to win election in a state which has historically been a Republican stronghold.
Matt Gaetz, a Republican ally of Mr Trump, said: “It is both my hope and my expectation that the president will be in Florida so much between now and the election that Floridians will be hearing ‘Hail to the Chief’ in their dreams.”
The mid-terms come after a wave of parcel bomb attacks which targeted high-profile Democrats and critics of Mr Trump.
Ex-President Barack Obama, Hillary Clinton and Robert De Niro were among those posted suspect devices.