Carl P. Leubsdorf: 2024 might not be your grandfather’s presidential race

This combination of pictures shows President Donald Trump, left, and Democratic presidential nominee Joe Biden during a 2020 debate. The two are current front-runners in the 2024 presidential race. (Brendan Smialowski and Jim Watson/AFP via Getty Images/TNS)

In touting her own presidential qualifications, Nikki Haley sounded a familiar theme that is likely to be heard a lot in the 2024 presidential race. It’s a potential problem for both current front-runners.