Getting your Trinity Audio player ready...
Democrats Amy Briel, Cohen Barnes and Carolyn Zasada are competing in the Democratic primary. Republicans Crystal Loughran and Liz Bishop are competing in the Republican primary.
Votes will be counted in contested races after polls close in Illinois at 7 p.m. Central. See statewide election results here. Last minute questions about voting? View our voter guide. Here is one for Chicago residents and one for suburban residents.