The premise of ABC's newest show, Designated Survivor, focuses on the presidential line of succession. How can a low-ranking cabinet member suddenly become President of the United States?
Watch the premiere of Designated Survivor TONIGHT at 9 p.m. on ABC15!
Of course, it would take the worst of the worst happening. But, selecting a designated survivor, is not just TV fodder. It's something the president actually does ahead of the State of the Union address.
Related: 5 things to know about the designated survivor program
It got us thinking about who succeeds the president and how many people have the potential to fill the Oval Office should something bad happen. Take our quiz below and see how you do: