Joe Biden accidentally refers to Bernie Sanders as 'president'

While debating Sen. Bernie Sanders, I-Vt., former Vice President Joe Biden accidentally referred to the senator as "president" rather than a senator.

"If you notice, nobody's yet said how much it's going to cost the taxpayer. I hear this, large savings, the president thinks – my friend from Vermont thinks that the employer is going to give you back if you negotiate," said Biden, referring to projections of reduced costs in Medicare for All plans.

Biden continued his attack on Sanders by calling him a "socialist."

"For a socialist, you've got a lot more confidence in corporate America than I do," Biden quipped.

The former vice president has staked out a position closer to the center on the Democratic Party's current debate over the future of its health care policy that is based on strengthening Obamacare, a position that has drawn fire from other candidates that have rolled out more progressive health care plans.

This article originally appeared on USA TODAY: Democratic debate: Biden accidentally says Bernie Sanders is president