Obama, whose visit was announced Monday, is scheduled to stump with the two top-of-ticket candidates and other Democrats at the Ice Palace film studioes only four days before the November 6 elections.
In 2006, the Democrats pulled in 31 seats in the midterm elections and regained control of the House during President George W Bush's second term.
If enough of those districts switch to Democrats, the Republican party could lose its super majority in the Legislature, meaning Republicans would be unable to override gubernatorial vetoes on a party-line vote.
In the closing days of Florida's high-stakes races for governor and USA senator, President Donald Trump and former President Barack Obama will try to rally the Republican and Democratic faithful in the state.
"There's a rather good opportunity in Tennessee, Nevada and Arizona and then the long shot, which would be catastrophe for the Republicans, would be Texas".
But Pence added, "I think we all know what President Trump thinks of conventional wisdom".
Trump has remained focused on the elections, even in the wake of a series of tragedies that have stunned the nation.
Claudio Ranieri pays tribute to Vichai Srivaddhanaprabha following death of Leicester owner
According to Forbes magazine, Vichai was the fifth-richest person in Thailand with an estimated net worth of $4.9 billion. Eyewitnesses say the chopper just cleared the roof of the stand as it developed a snag and crashed onto the auto park.
Wrapping up her Senate re-election bid, Democratic Sen.
Some Republicans deep in Trump country have regained ground.
There is also a danger the president could face impeachment proceedings if Democrats take a majority in Congress.
Southwest Florida and the Panhandle are two party strongholds where Republicans look to run up large vote margins.
Democrats are emphasizing to voters that state Republicans cut specialty care for some Medicaid recipients, eliminated the state's pharmacy-assistance program and passed "right to work" legislation that was overwhelmingly rejected by Missouri voters in August.
Some of these seats are in key swing states such as Florida and Pennsylvania.