Brian Kilmeade compared Pennsylvania U.S. Senate candidate John Fetterman's campaign to that of the time President Biden spent many of his days "in the basement" on Saturday's "One Nation."

BRIAN KILMEADE: Things have certainly changed in this election season. The Republicans' dreams of taking back the Senate had originally focused on flipping just one seat and taking the majority, like Georgia. But now, they have to hold a seat. It's a new focus. And we're talking about Pat Toomey's seat in Pennsylvania. After a bruising primary session, Dr. Mehmet Oz won with just 36% of the vote. The rookie politician found himself down double digits to John Fetterman.

John Fetterman, lieutenant governor of Pennsylvania and Democratic senate candidate and TV personality and former faculty member at Columbia University, Dr. Oz compete for an open Senate seat in Pennsylvania. (Michelle Gustafson/Bloomberg/Alexi Rosenfeld via Getty Images)

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But since, things have radically changed. Democratic candidate for senator Lt. Gov. Fetterman suffered a stroke before the primary. He had to take weeks off the trail, but the lead was so big, they thought they could just ride it out, stay in the basement, pull a Biden. But Republicans rallied around Dr. Oz, and Fetterman has been forced to campaign, and his performance has been less than stirring and reassuring for Democrats.

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BRIAN KILMEADE: Democrats tried to pull a Biden with Fetterman in the basement

Brian Kilmeade says Democrats thought John Fetterman's lead was so big, he could just 'ride it out'