You can find performance maps for every Democratic and Republican primary candidate for statewide office going back to at least 2002 and many races from 1994-2000 are also available. You can see maps by county, by Cook County township and/or by Chicago ward.
I'm pretty happy with this development as now this website can display all of the statewide maps I've had in my files and had hoped to include.
|▪||ANNOUNCEMENT: New Subscription Service and Free iPhone/iPad app|
|▪||2018 Cycle District Rankings|
|▪||Understanding the Governor's Race (General Election) - Governor Rauner's 2014 Fundraising|
|▪||Understanding the Governor's Race (Dem Primary) - The 2004 Primary for US Senate|
|▪||Understanding the Governor's Race (Dem Primary) - The Burris Coalition|