President Obama courted Florida seniors Thursday - a key demographic in a key swing state. He said if Mitt Romney becomes president, Medicare would become a voucher system, and that would cost them more.
"If the voucher isn't worth what it takes to buy insurance in a private market place, you're out of luck," he said. "You've got to make up the difference."
The president also pushed his plan to end the Bush-era tax cuts for the wealthy - tying it back to that all-important senior issue.
"It's wrong to ask you to pay more for Medicare so that people who are doing well get even more."
The president has shifted his attacks on Romney from his business record to his income taxes and now Medicare. Romney, however, is continuing to focus on jobs and the economy.
Touring a small business in Roxbury, Massachusetts, the former governor said the president was wrong when he said business owners don't build companies without government help.
"The president does believe that people who build enterprises like this really aren't responsible for it," Romney said. "This is not the result of government. This is the result of people who take risk."
Romney accused the president of not doing enough to create jobs, while holding more than 100 fundraisers in the last six months.
"The job he's looking to protect is his own."
Romney campaigns in New Hampshire Friday. The president will still be in Florida.
The president held two fundraisers Thursday and raised about $750,000 for his re-election bid.