Charlie, the elder son, is less forthcoming.
"Charlie? He's the shy one. He's hiding behind Eric Cantor right there," Ryan said Saturday in Richmond, Va., as Charlie tried to stand behind the Republican leader.
A few hours later in Panama City, Fla., he was called "this shy guy in the family."
But it most often is 7-year-old Sam who steals the show.
After Ryan's sole vice presidential debate with Biden, Sam got bored with the staged handshakes. He wandered over to his father's seat on the debate stage and started spinning around in the office chair.
At his dad's first campaign event this weekend in Marietta, Ohio, he jumped onto the stage and earned cheers of his own while his pop walked off the stage to shake supporters' hands.
Sam starting flashing a V-for-victory sign and wide grin.
"I don't know where he gets it," mother Janna Ryan said of Sam last weekend as she chased after him in New Philadelphia, Ohio.
Right before, he hoisted his hands above his head, blocking photographers covering Paul Ryan's factory tour.
"It's kind of crazy," Mrs. Ryan said as she shook her head.