Donald Trump is already claiming victory in the US election, days out from the final day of voting.
Speaking at a rally in the key state of Florida this morning, the Republican nominee told supporters he's a shoo-in.
"In five days we are going to win the great state of Florida and we are going to win back the White House."
Donald Trump supporters in Florida (Getty)
But not if Barack Obama has anything to do with it. He is also in Florida, urging voters to back his preferred successor - Democrat nominee Hillary Clinton.
He told a packed rally in Miami that Mr Trump is the wrong man for the top job.
"Donald Trump is uniquely unqualified to be President," he told supporters, who laughed at the suggestion - earning a rebuke from the outgoing President.
"No, I'm not joking. You laugh, I'm not joking. He is temperamentally unfit to be Commander-in-Chief."
Mr Obama didn't stop there, attacking Mr Trump's connection with working class voters.
"He spends a lot of time with celebrities, spends a lot of time hanging out with the really wealthy folk, but you don't see him hanging out with working people - unless they're cleaning his room or mowing the fairways at his golf club."
It's Mr Obama's second visit to Florida in less than a week. As the polls tighten, the state is shaping up to be the one which decides the next US President - Mr Trump likely needs its 29 Electoral College votes to win. If Ms Clinton takes it out, Mr Trump has few other paths to victory.
North Carolina's another swing state, its 15 votes highly sought-after by both candidates. Mr Trump is due to hold further rallies in Concord and Selma today, while Ms Clinton is dropping into Winterville and state capitol Raleigh.
Ohio, which is narrowly leaning to Mr Trump, will host Ms Clinton's former rival and now ardent supporter Bernie Sanders, while Bill Clinton will be urging voters in Nevada to support his wife.
Mr Trump's running mate Mike Pence has made flying visits to Arizona, Colorado and New Mexico. Arizona's leaning towards Mr Trump, but New Mexico and Colorado are heavily favoured to go for Ms Clinton - two blue states in a sea of red.