How Lori Lightfoot plans to ride the Ocasio-Cortez wave without endorsing her policies

It was a Tuesday in late June when Alexandria Ocasio-Cortez turned the world upside down. The New York machine shuttered to an unexpected halt. A 28-year-old socialist had taken on the King of Queens in the state’s 14th congressional district and won.

Some 800 miles west, in Chicago, mayoral candidate Lori Lightfoot was hoping to replicate that victory. A little more than seven months out from the city’s election, Lightfoot and her campaign have tried to paint her as the...