Democrats are attacking Republican vice presidential candidate Paul Ryan over his plan for privatized social security.
Ryan proposed legislation in 2010 allowing younger workers to put more than one-third of their social security taxes into personal accounts. Recipients could also pass along the money to their heirs.
Ryan's plan would have allowed workers 55 and older to stay in the current system. But some Democrats warned Ryan is putting retirement security at risk.
When asked about the Medicare discrepancy, Ryan said his plan has changed and now has bipartisan support.
"As we got into looking at this issue, talking with Democrats, it evolved to be a plan that is now bipartisan," he said.
The Romney campaign also responded, saying both Mitt Romney and Paul Ryan support gradual reforms that protect current beneficiaries. The pair say they would make sure the program doesn't go bankrupt.
Meanwhile, the Republican team is going after President Barack Obama on Medicare.
Romney and Ryan attacked his plan to cut $716 billion from Medicare to help pay for the health care law.
"Medicare should not be used as a piggy bank for Obamacare," Ryan said recently while campaigning. "Medicare should be used to be the promise that it made to our current seniors. Period. End of story."
President Obama shot back, claiming Ryan's plan would cost seniors more in medical payments.