“Should you compare Oz to Trump in 2020, or to some version of Romney?” Mr. Casey spoke.

Rob Gleason is a former chair of the state Republican Party and lives in central Pennsylvania. He rejected the notion that Democrats had made inroads with working-class white voters because of Mr. Fetterman. Dr. Oz, Mr. Gleason said, lost mostly because Mr. Fetterman succeeded in painting him as a rich out-of-stater with multiple houses — a class-war campaign.

“I’m still mystified how he could do so well because he didn’t release any of his medical records, he didn’t do good in the debate, he embraced Biden,” Mr. Gleason spoke highly of Mr. Fetterman. He is still recovering from a severe stroke that occurred in May. “He’s an odd-looking guy, in shorts and a hoodie. I thought this was going to be easy.

“The class struggle and fact Oz wasn’t from Pennsylvania,” Continued Mr. Gleason “that was the death knell.”

It was rare to find Trump voters from Armstrong County who had voted for Mr. Fetterman despite being part of a party. Michael Yeomans (66), a retired heavy-equipment operator who supported Donald Trump in 2016, stated that he had never thought about voting for Dr. Oz. “based on the things I have seen Dr. Oz do before he was interested in running, like on TV.’’

“I think in the older days,” He added: “they’d call it a snake-oil salesman.”

Emmy McQuaid (retired teacher) was more sympathetic to Dr. Oz than she was for Mr. Fetterman. “I think he’s a good man,” She spoke. “I’m not sure how his health is going to hold up, but I think his intentions might be good. I think Dr. Oz’s would have too, but I’d like to see John have a go.”

A different explanation for why Mr. Fetterman did well in red counties than Mr. Biden is that in 2022, there was a wider range of voters than two years ago.

Before his stroke, Mr. Fetterman campaigned vigorously in rural counties for over a year before he was able to retire under the banner. “every county, every vote,” His popularity may have influenced inconsistant voters to vote for him.