| 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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| Trad 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+ 15.29 | D+ 14.49% | D+ 11.25% | D+ 3.04% | D+ 3.67% | D+ 32.89% | D+ 12.57% | D+ 6.19% | D+ 11.2% | D+ 3.79% | R+ 8.57 | R+ 4.29 | R+ 21.59 | D+ 9.4% | D+ 23.49% | R+ 16.5 | R+ 18.78 | D+ 2.64% | R+ 18.21 | R+ 13.29 | D+ 21.1% | D+ 34.31% | R+ 28.55 | R+ 23.6 | D+ 12.86% | D+ 24.63% | R+ 4.05 | D+ 38.63% | D+ 19.22% | D+ 11.7% | R+ 4.1 | R+ 8.3 | D+ 34.37% | R+ 0.98 | R+ 19.06 | R+ 25.82 | D+ 18.3% | D+ 5.99% | R+ 38.36 | R+ 9.34 | R+ 24.19 | R+ 35.29 | R+ 6.68 | R+ 53.32 | R+ 26.58 |
| Downstate | R+ 34.24 | R+ 17.14 | R+ 13.67 | R+ 9.56 | R+ 19.17 | D+ 13.84% | R+ 5.93 | R+ 7.64 | R+ 18.23 | R+ 9.69 | R+ 17.99 | R+ 12.39 | R+ 26.88 | R+ 2.28 | D+ 14.25% | R+ 24.04 | R+ 19.43 | R+ 7.31 | R+ 25.02 | R+ 24.45 | D+ 14.3% | D+ 25.79% | R+ 27.59 | R+ 24.38 | D+ 3.66% | D+ 24.76% | R+ 7.91 | D+ 31.08% | D+ 9.96% | D+ 17.44% | R+ 4.39 | R+ 9.75 | D+ 25.65% | D+ 14.33% | R+ 4.99 | R+ 5.91 | D+ 30.65% | D+ 17.56% | R+ 20.35 | R+ 4.3 | R+ 24.34 | R+ 0.65 | D+ 2.87% | R+ 41.15 | R+ 3.39 |
| 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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