GOP vice presidential candidate Paul RyanPaul RyanGOP waiting to hear from Trump on ObamaCare Five takeaways from Trump's inauguration Hispanic Caucus members slam Trump after inaugural address MORE took a shot at Vice President Joe BidenJoe BidenBiden boards train home to Delaware after Trump's inauguration Overnight Tech: Meet the key players for Trump on tech | Patent chief staying on | Kerry aide goes to Snapchat | Uber's M settlement Biden's farewell message: Serving as VP has been my 'greatest honor' MORE Thursday over his latest gaffe.

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"It is great to be here in North Canton, or as Joe Biden might say, it's great to be here in Nevada," Ryan said as he opened an address at Walsh University in North Cantor, Ohio. 

Biden on Tuesday mistakenly told a crowd in Danville, Va., that they could help President Obama win North Carolina in November. 

"We can win North Carolina again," Biden said. 


More from The Hill:
♦ White House says Obama will stick with Biden as running mate
♦ Suspect in shooting allegedly said: 'I don't like your politics'


Biden is enduring a difficult week on the campaign trail. He also made headlines on Tuesday when he told a crowd in Virginia that the GOP ticket would "put y'all back in chains" by undoing financial reforms for Wall Street. The Republican ticket hammered Biden over the remarks, but Biden said GOP policies were more outrageous than anything he said.