“I can’t go on television and say, ‘Let’s not talk about this, let’s pivot to the real issues,’ because people think age is a real issue,” James Carville, 78, the Democratic strategist, said last month. It was top of mind for several people who milled around a community center recently as a canasta game ended in Plantation, Fla.Doreen W., 78, a Democrat who declined to share her last name on the record, citing fear of causing problems for her husband at work, said she hoped Mr. Biden would run again. But she worried about whether he was up to it. “I know how tiring it is for me, and I’m not doing anything but retire,” she said. “I’m aware of his age and I’m concerned about that.”Informed that Mr. Biden was not 78, as she had thought, but 80, she groaned, “Oh, God.”“If I could just keep him at age 80 and active the way he is, I’d be more than happy,” she said.

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