| 2020 | 2020 | 2020 | 2018 | 2018 | 2018 | 2018 | 2018 | 2016 | 2016 | 2016 | 2014 | 2014 | 2014 | 2014 | 2014 | 2014 | 2012 | 2010 | 2010 | 2010 | 2010 | 2010 | 2010 | 2008 | 2008 | 2006 | 2006 | 2006 | 2006 | 2006 | 2004 | 2004 | 2002 | 2002 | 2002 | 2002 | 2002 | 2002 | 2000 | 1998 | 1998 | 1996 | 1994 | 1990 |
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| Exp Collars | Fair Tax | President | US Senate | Governor | AG | SOS | Comptroller | Treasurer | President | US Senate | Comptroller | US Senate | Governor | AG | SOS | Comptroller | Treasurer | President | US Senate | Governor | AG | SOS | Comptroller | Treasurer | President | US Senate | Governor | AG | SOS | Comptroller | Treasurer | President | US Senate | US Senate | Governor | AG | SOS | Comptroller | Treasurer | President | US Senate | Governor | US Senate | Governor | Governor |
|---|
| Cook County | D+ 25.79% | D+ 50.3% | D+ 46.98% | D+ 47.6% | D+ 46.37% | D+ 66.65% | D+ 56.54% | D+ 51.66% | D+ 53.68% | D+ 45.53% | D+ 35.5% | D+ 45.04% | D+ 31.48% | D+ 54.73% | D+ 62.33% | D+ 25.45% | D+ 33.59% | D+ 49.37% | D+ 32.68% | D+ 35.77% | D+ 59.82% | D+ 65.64% | D+ 15.23% | D+ 28.31% | D+ 53.39% | D+ 62.89% | D+ 38.81% | D+ 72.07% | D+ 57.26% | D+ 61.62% | D+ 40.75% | D+ 41.1% | D+ 64.72% | D+ 43.96% | D+ 34.16% | D+ 28.94% | D+ 56.6% | D+ 57.63% | D+ 12.91% | D+ 39.98% | D+ 28.85% | D+ 9.71% | D+ 39.04% | R+ 5.38 | D+ 8.39% |
| ___Chicago | D+ 42.79% | D+ 66.7% | D+ 61.57% | D+ 66.15% | D+ 63.93% | D+ 78.8% | D+ 72.77% | D+ 68.87% | D+ 71.32% | D+ 62.68% | D+ 55.05% | D+ 66.14% | D+ 56.72% | D+ 72.1% | D+ 76.36% | D+ 46.48% | D+ 57.46% | D+ 69.41% | D+ 57.25% | D+ 58.02% | D+ 74.85% | D+ 77.93% | D+ 40.59% | D+ 54.15% | D+ 71.72% | D+ 77.35% | D+ 62.08% | D+ 83.22% | D+ 74.18% | D+ 78.52% | D+ 63.8% | D+ 63.07% | D+ 77.89% | D+ 66.35% | D+ 60.25% | D+ 54.48% | D+ 75.2% | D+ 76.49% | D+ 41.75% | D+ 63.01% | D+ 57.48% | D+ 37.37% | D+ 64.51% | D+ 25.87% | D+ 32.62% |
| ___Cook Suburbs | D+ 9.9% | D+ 34.35% | D+ 32.73% | D+ 28.61% | D+ 28.3% | D+ 54.15% | D+ 39.93% | D+ 34.06% | D+ 35.74% | D+ 28.09% | D+ 15.71% | D+ 25.04% | D+ 7.43% | D+ 38.19% | D+ 49% | D+ 5.59% | D+ 11.01% | D+ 28.93% | D+ 8.81% | D+ 14.13% | D+ 45.21% | D+ 53.67% | R+ 9.23 | D+ 3.37% | D+ 34.33% | D+ 48.22% | D+ 15.81% | D+ 61.1% | D+ 40.5% | D+ 45.15% | D+ 18.37% | D+ 18.54% | D+ 51% | D+ 21.39% | D+ 7.5% | D+ 2.96% | D+ 37.55% | D+ 38.52% | R+ 16.04 | D+ 15.59% | R+ 1.98 | R+ 17.02 | D+ 15.32% | R+ 35.86 | R+ 17.79 |
| Collars | R+ 17.59 | D+ 11.11% | D+ 8.6% | D+ 1.62% | R+ 1.71 | D+ 14.55% | D+ 10.97% | D+ 4.53% | D+ 8.05% | D+ 2.46% | R+ 9.53 | R+ 5.32 | R+ 21.92 | D+ 8.66% | D+ 23.13% | R+ 16.52 | R+ 18.9 | D+ 1.69% | R+ 18.69 | R+ 14.03 | D+ 20.6% | D+ 34.31% | R+ 28.6 | R+ 24.51 | D+ 11.96% | D+ 24.94% | R+ 4.41 | D+ 38.67% | D+ 18.08% | D+ 12.1% | R+ 3.87 | R+ 8.83 | D+ 33.55% | D+ 0.8% | R+ 17.66 | R+ 24.57 | D+ 19.39% | D+ 7.16% | R+ 36.76 | R+ 8.99 | R+ 23.96 | R+ 32.84 | R+ 6.32 | R+ 52.49 | R+ 23.3 |
| Downstate | R+ 34.62 | R+ 18.17 | R+ 14.49 | R+ 9.88 | R+ 8.99 | D+ 16.56% | R+ 6.84 | R+ 7.89 | R+ 19.18 | R+ 10.21 | R+ 18.34 | R+ 12.54 | R+ 27.27 | R+ 3.13 | D+ 13.38% | R+ 24.98 | R+ 19.41 | R+ 7.73 | R+ 25.44 | R+ 25.18 | D+ 13.9% | D+ 24.76% | R+ 27.43 | R+ 23.71 | D+ 3.29% | D+ 24.51% | R+ 8.06 | D+ 30.19% | D+ 9.78% | D+ 17.78% | R+ 4.6 | R+ 9.49 | D+ 25.31% | D+ 14.68% | R+ 4.5 | R+ 4.71 | D+ 31.19% | D+ 17.94% | R+ 19.58 | R+ 4.04 | R+ 24.51 | D+ 1.22% | D+ 3.56% | R+ 40.48 | R+ 2.9 |
| TOTAL | R+ 6.55 | D+ 16.99% | D+ 16.07% | D+ 15.7% | D+ 11.96% | D+ 39.03% | D+ 22.9% | D+ 18.73% | D+ 17.06% | D+ 15.08% | D+ 5.02% | D+ 10.86% | R+ 3.92 | D+ 21.69% | D+ 34.31% | R+ 3.89 | D+ 0.26% | D+ 16.87% | R+ 1.6 | D+ 0.7% | D+ 33.07% | D+ 42.85% | R+ 11.74 | R+ 4.42 | D+ 25.14% | D+ 39.31% | D+ 10.54% | D+ 48.2% | D+ 29.78% | D+ 32.76% | D+ 12.71% | D+ 10.34% | D+ 42.92% | D+ 22.31% | D+ 7.12% | D+ 3.29% | D+ 38.02% | D+ 30.6% | R+ 11.47 | D+ 12.01% | R+ 2.9 | R+ 3.57 | D+ 15.41% | R+ 29.44 | R+ 2.58 |
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