President Obama spent his weekend touring Florida by bus, hammering Republican nominee Mitt Romney for a Medicare reform plan that he said would raise costs for current and future seniors.

To support his charge, Obama cited an August report by the liberal Center for American Progress that estimated future seniors would be forced to pay hundreds of thousands of dollars more over the course of their retirements under a voucher program Romney would introduce in 2023. Future seniors would use the vouchers, officially called premium support payments, to purchase private health insurance.