Realistically, doesn't that just mean the vice president is acting president as long as the president is in jail? Does a vote for a president in prison ultimately go toward whoever is their running mate? Could Trump ultimately just choose one of his kids and let them run the country while he's in prison, like a Mafia family?
Good questions. The VP would be president if the elected president can't do the job for any reason (death, incapacitaiton, etc.). If Trump chooses a kid as his running mate, and wins, then yes. Trump would never cede power to anyone though. He'd try to run the country from prison, and in his role as commander-in-chief, would be constantly ordering the military to break him out.