Illinois Profile - General Elections


Vote Share - Where the Vote Comes From

The location of the vote varies from year to year and has evolved over time as the population has shifted. Further, the noted difference in turnout between Presidential election years and non-presidential election years has an effect on the location of the vote. Below is a table that shows the vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the five traditional collar counties (Lake, McHenry, DuPage, Kane & Will) and the downstate 96 counties.


General Election - Vote Share by Region - Traditional Collar Counties
Vote Share by Region - Traditional Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 18.10% 19.37% 18.59%
Cook County Suburbs 18.97% 18.99% 19.12%
Collar Counties (5) 24.89% 24.45% 24.28%
Downstate (96) 38.03% 37.18% 38.00%
TOTAL: 100.00% 100.00% 100.00%



Sometimes in an election with significant television advertising there is value in looking at a regional breakdown with an expanded list of collar counties that includes all of the counties within the Chicago media market. This table shows vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the remaining 11 counties in the Chicago media market (Lake, McHenry, DuPage, Kane, Will, Dekalb, LaSalle, Kendall, Grundy, Kankakee and Iroquois) and the remaining downstate 90 counties. See the FAQ for more info on the difference between traditional collars vs. expanded collars.

General Election - Vote Share by Region - Expanded Collar Counties
Vote Share by Region - Expanded Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 18.10% 19.37% 18.59%
Cook County Suburbs 18.97% 18.99% 19.12%
Collar Counties (11) 29.19% 28.55% 28.39%
Downstate (90) 33.73% 33.07% 33.89%
TOTAL: 100.00% 100.00% 100.00%



Illinois has ten media markets. Some like the Peoria media market are contained entirely within the state of Illinois, others like the St. Louis media market overlap other states. Most of the vote comes from the Chicago media market, this table below shows the vote share for the top ballot races by media market for the last two cycles.

General Election - Vote Share by Media Market
Vote Share by Media Market
Media Market 2014 Governor 2012 President 2010 US Senate
Champ/Spfld/Decatur 7.82% 7.41% 7.79%
Chicago 66.27% 66.93% 66.11%
Evansville 0.54% 0.49% 0.53%
Paducah 2.82% 2.73% 2.90%
Peoria 5.35% 5.29% 5.36%
Quad Cities 3.82% 3.75% 3.85%
Quincy 1.48% 1.40% 1.52%
Rockford 3.78% 3.82% 3.71%
St. Louis 7.15% 7.27% 7.21%
Terre Haute 0.96% 0.93% 1.03%
TOTAL: 100.00% 100.00% 100.00%




Turnout

Turnout can be impacted by many factors. The table below has links to spreadsheets for all kinds of turnout data.

General Election - Turnout
Data Set
Turnout by County
Turnout by Cook County Township
Turnout by Chicago Ward
Turnout by Region - Traditional Collars
Turnout by Region - Expanded Collars
Turnout by Media Market




Candidate Performance

The table below has links to spreadsheets for candidate performance (Democrat & Republican) by County/Ward/Township/Region(s)/Media Market.

General Election - Candidate Performance
Data Set Democrat Republican
Candidate Performance by County Democrat Republican
Candidate Performance by Cook County Township Democrat Republican
Candidate Performance by Chicago Ward Democrat Republican
Candidate Performance by Region - Traditional Collars Democrat Republican
Candidate Performance by Region - Expanded Collars Democrat Republican
Candidate Performance by Media Market Democrat Republican




Other Useful Data

The table below has links to other useful reference maps including Illinois media markets and census data such as race, education and income.

Other Useful Data
Type Data Set
Utility Map Media Market Map
Census Data Map Percent African American by Census Tract
Census Data Map Percent Hispanic by Census Tract
Census Data Map Percent Bachelor's Deg. or Higher by Census Tract
Census Data Map Household Mean Income by Census Tract




Illinois Profile - Democratic Primaries


Vote Share - Where the Vote Comes From

The location of the vote is different in primaries than it is in general elections. Below is a table that shows the vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the five traditional collar counties (Lake, McHenry, DuPage, Kane & Will) and the downstate 96 counties.

Democratic Primary - Vote Share by Region - Traditional Collar Counties
Vote Share by Region - Traditional Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 36.84% 37.21% 37.49%
Cook County Suburbs 21.40% 24.47% 25.38%
Collar Counties (5) 10.89% 14.36% 14.28%
Downstate (96) 30.87% 23.97% 22.85%
TOTAL: 100.00% 100.00% 100.00%



Sometimes in an election with significant television advertising there is value in looking at a regional breakdown with an expanded list of collar counties that includes all of the counties within the Chicago media market. This table shows vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the remaining 11 counties in the Chicago media market (Lake, McHenry, DuPage, Kane, Will, Dekalb, LaSalle, Kendall, Grundy, Kankakee and Iroquois) and the remaining downstate 90 counties. See the FAQ for more info on the difference between traditional collars vs. expanded collars.

Democratic Primary - Vote Share by Region - Expanded Collar Counties
Vote Share by Region - Expanded Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 36.84% 37.21% 37.49%
Cook County Suburbs 21.40% 24.47% 25.38%
Collar Counties (11) 12.71% 16.41% 16.50%
Downstate (90) 29.05% 21.92% 20.62%
TOTAL: 100.00% 100.00% 100.00%



Illinois has ten media markets. Some like the Peoria media market are contained entirely within the state of Illinois, others like the St. Louis media market overlap other states. Most of the vote comes from the Chicago media market, this table below shows the vote share for the top ballot races by media market for the last two cycles.

Democratic Primary - Vote Share by Media Market
Vote Share by Media Market
Media Market 2014 Governor 2012 President 2010 US Senate
Champ/Spfld/Decatur 6.03% 4.26% 4.17%
Chicago 70.95% 78.08% 79.38%
Evansville 0.35% 0.32% 0.32%
Paducah 3.21% 2.67% 2.82%
Peoria 3.46% 2.44% 2.58%
Quad Cities 3.28% 3.01% 2.45%
Quincy 0.80% 0.68% 0.75%
Rockford 2.26% 2.47% 1.46%
St. Louis 8.98% 5.67% 5.56%
Terre Haute 0.69% 0.40% 0.51%
TOTAL: 100.00% 100.00% 100.00$



Candidate Performance

The table below has links to spreadsheets for candidate performance by County/Ward/Township/Region(s)/Media Market.

Democratic Primary - Candidate Performance
Data Set
Democratic Primary - Candidate Performance by County
Democratic Primary - Candidate Performance by Cook County Township
Democratic Primary - Candidate Performance by Chicago Ward
Democratic Primary - Candidate Performance by Region - Traditional Collars
Democratic Primary - Candidate Performance by Region - Expanded Collars
Democratic Primary - Candidate Performance by Media Market




Illinois Profile - Republican Primaries


Vote Share - Where the Vote Comes From

The location of the vote is different in primaries than it is in general elections. Below is a table that shows the vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the five traditional collar counties (Lake, McHenry, DuPage, Kane & Will) and the downstate 96 counties.

Republican Primary - Vote Share by Region - Traditional Collar Counties
Vote Share by Region - Traditional Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 5.07% 5.04% 4.45%
Cook County Suburbs 15.41% 16.21% 16.59%
Collar Counties (5) 30.22% 31.19% 32.60%
Downstate (96) 49.30% 47.57% 46.35%
TOTAL: 100.00% 100.00% 100.00%



Sometimes in an election with significant television advertising there is value in looking at a regional breakdown with an expanded list of collar counties that includes all of the counties within the Chicago media market. This table shows vote share by region for the top ballot races in the last two cycles. The regions are defined as City of Chicago, the Cook County suburbs outside of Chicago, the remaining 11 counties in the Chicago media market (Lake, McHenry, DuPage, Kane, Will, Dekalb, LaSalle, Kendall, Grundy, Kankakee and Iroquois) and the remaining downstate 90 counties. See the FAQ for more info on the difference between traditional collars vs. expanded collars.

Republican Primary - Vote Share by Region - Expanded Collar Counties
Vote Share by Region - Expanded Collars
Region 2014 Governor 2012 President 2010 US Senate
Chicago 5.07% 5.04% 4.45%
Cook County Suburbs 15.41% 16.21% 16.59%
Collar Counties (11) 35.59% 36.49% 38.30%
Downstate (90) 43.93% 42.27% 40.65%
TOTAL: 100.00% 100.00% 100.00%



Illinois has ten media markets. Some like the Peoria media market are contained entirely within the state of Illinois, others like the St. Louis media market overlap other states. Most of the vote comes from the Chicago media market, this table below shows the vote share for the top ballot races by media market for the last two cycles.

Republican Primary - Vote Share by Media Market
Vote Share by Media Market
Media Market 2014 Governor 2012 President 2010 US Senate
Champ/Spfld/Decatur 11.90% 10.22% 10.70%
Chicago 56.07% 57.73% 59.35%
Evansville 0.85% 0.63% 0.86%
Paducah 3.39% 3.30% 3.08%
Peoria 8.26% 7.94% 7.79%
Quad Cities 4.20% 4.17% 3.91%
Quincy 2.18% 2.21% 1.87%
Rockford 5.71% 5.88% 4.97%
St. Louis 5.99% 6.47% 6.06%
Terre Haute 1.44% 1.44% 1.41%
TOTAL: 100.00% 100.00% 100.00$



Candidate Performance

The table below has links to spreadsheets for candidate performance by County/Ward/Township/Region(s)/Media Market.

Republican Primary - Candidate Performance
Data Set
Republican Primary - Candidate Performance by County
Republican Primary - Candidate Performance by Cook County Township
Republican Primary - Candidate Performance by Chicago Ward
Republican Primary - Candidate Performance by Region - Traditional Collars
Republican Primary - Candidate Performance by Region - Expanded Collars
Republican Primary - Candidate Performance by Media Market