I think he turns 72 this year.
A bit of trivia: He used to date Katherine Harris, the former Republican Secretary of State of Florida during the 2000 election. (Nothing to do with his call on Gore to drop out since the dating didn't begin until some years later.)
I do live in his district. Seriously low energy campaign during the last election. I keep thinking he will retire.
I also think the Democrat party has left him behind as he is pro life and perhaps not as crazy as some. My father in law, however, thinks Peterson only votes with the republicans when the dems don’t need his vote-a ploy to present himself as moderate and only interested in what’s best for his constituents. He always votes with fellow dems if they need it.