National media are already portraying this as a national showdown between the Hillary Clinton/Wall Street/corporate wing of the Democratic Party and the Elizabeth Warren/Bernie Sanders/Harold Washington populist wing.
The study of relevant history can shed insight into present-day events, even if the specific details may differ. With that in mind, it may be worthwhile to look at four historical Chicago mayoral campaigns as Karen Lewis sets her sights on Rahm Emanuel.
The ring tone on his cell phone blared the '60s hit, "Hold On, I'm Comin'." Recognizing his girlfriend's number, Eric Caine anxiously took the call. "It's OK," Tina reassured him. "You're on the voter rolls."
For generations Chicago has dined out on a hard-edged Democratic image. But all the fights were internecine. When it comes to confronting the national GOP, the mythic nature of Chicago politics is just that, a myth.