The second debate in the U.S. Senate race in Arkansas wasn’t short on jabs between the incumbent Democrat, Sen. Mark Pryor and his Republican challenger, Rep. Tom Cotton.

In trying to hit Cotton on the federal student loan program last night, though, Pryor took a dig at his opponent’s own education. Cotton graduated from Harvard University and Harvard Law School before joining the Army and serving in Iraq and Afghanistan.

>>> Policy Aside, These Senate Hopefuls Get Personal