NEW HAMPTON, Iowa — Joe Biden lashed out at a voter during a town hall event on his “No Malarkey” bus tour in Iowa, marking one of the tensest moments the former vice president has faced on the campaign trail so far.

“I’ve got two problems with you,” an 83-year-old voter told Biden on Thursday afternoon. “You’re too old. I mean, truly. I know damn well I don’t have the mental faculties I did.”