President Barack Obama is drawing new attention to Medicare in the all-important battleground of Florida, taking on his Republican challenger Mitt Romney on an issue that has been more favorable to Democrats.

Campaigning for a second day in Florida, where older voters and workers approaching retirement hold sway, Obama on Sunday was expected to highlight a study by a Democratic leaning group that concluded that on average a man or woman retiring at age 65 in 2023, would have to pay $59,500 more for health care over the length of their retirement under Romney's plan.

The numbers are even higher for younger Americans who retire later, the study found. A person who qualifies for Medicare n 2030 — today's 48-year-old — would see an increase of $124,600 in Medicare costs over their retirement period.

While Romney's changes to Medicare would affect future retirees, the study also said that Romney's plan to get rid of Obama's health care law could raise health care costs in retirement by $11,000 for the average person who is 65 years old today by reinstating limits on prescription drug coverage.