Photo: TERRENCE ANTONIO JAMES/CHICAGO TRIBUNE

Age: 33
Occupation: U.S. representative for the 14th District

In 2018, the freshman Democrat and former adviser to Barack Obama unseated incumbent Randy Hultgren in her historically conservative district by campaigning on health care reform. She’s not part of AOC’s Squad, but she is part of a pragmatic clique nicknamed the Big Six: newbie reps who serve as liaisons to congressional leadership and who many observers believe have formidable political futures.