In 2012, Hall went skydiving two days before the Republican primary. This time, he made a playful television ad calling his wrinkles political battle scars.
Since the primary, his campaign hired a former Reagan administration media relations director, as well as a veteran of the Republican National Committee chairman's office.
The congressman recently lent his campaign $100,000, his first personal loan in recent memory. Ratcliffe, meanwhile, has given his campaign about $575,000 and said he's ready to spend more. He's also expecting outside groups to spend enough to shape the race.
Hall knows his age is an issue. He even referred to a rumor that his congressional office still uses typewriters (it doesn't.)
But he's not reluctant to describe his brush with Bonnie and Clyde, who Hall remembers from the early 1930s when they "bought two cartons of Old Golds, two Coca-Colas and all the newspapers we had."
"He was a funny looking little guy. She was acceptable looking," Hall said. "I saw them. But I don't think it's that unusual. They were a lot of places."