Florida will have another tight race for president

The presidential race in Florida will likely come down to the wire. President Obama is trying to pull ahead in the polls with a campaign blitz across the state this week. He said our economy is improving, but he needs more time.

"It's going to take more than one year, or one term, or maybe even one president, to restore the dream," said President Obama.

He started his two-day swing in Florida in Jacksonville, trying to pry votes from Mitt Romney.

He repeatedly defended his health care law. Romney has been telling seniors that the health care law cuts $500 billion from Medicare. Obama punched back by criticizing Romney's approach.

"He plans to turn Medicare into a voucher program," said Obama. "One independent study found seniors would have to pay nearly $6,400 more for Medicare than they do."

The president will visit a retirement center in South Florida and Rollins College in the Orlando area. He is trying to reassure seniors and motivate students.

Either group could swing the election. Florida is up for grabs as usual.

Over the past 20 years, more than 30 million people in Florida voted for president (choosing either a Republican or Democrat). Around 15.3 million voted for a Democrat; around 15.3 million voted Republican.

That's a difference of around 57,000 votes out of 30 million votes cast.

Historically, independent voters who live along the I-4 corridor tip the balance.