His district includes the Mt. Greenwood Neighborhood of Chicago which is full of city employees who hate the city and went 70% for Trump. (You have to live in the city to work for the city, so if you hate the city and have to live here, Mt. Greenwood is one of the places you live. Edison Park, far NW is the other). They are dems in name, but very very RW in their views. DL is emblematic of them.
BUT Lipinksi’s district includes SW suburbs with many many immigrants from all over including the Middle East. I think it’s the demographics of the district that will sink him more than a challenge from his ideological left.