Singers Miley Cyrus and Katy Perry Campaign for Hillary Clinton

The two campaigned with young voters.

"You have to be present," she said. "This is an election that counts."

She advocated support not only for Clinton -- and the potential to make history with that vote -- but also for down-ballot candidates, introducing Senate candidate Catherine Cortez Masto.

Cyrus did get serious about the tone of the campaign. She told one student from Atlanta, Georgia, she was shocked at how mean-spirited the election has been.

"Its been super hateful," she said. Though that student was going to be voting in her home state, Cyrus said she was still hoping she'd rally her fellow students on Election Day.

"I'm counting on you," Cyrus said.