2018 Illinois elections Last updated September 29, 2025  2018 was a midterm election  year in the United States.
Turnout Primary election For the primary election, turnout was 26.48%, with 2,103,634 votes cast. [ 2]    
Turnout by county [ 2]     
County Registration Votes cast Turnout  Adams   47,422 6,670 14.07%  Alexander   5,303 1,691 31.89%  Bond   10,978 2,854 26%  Boone   32,552 7,525 23.12%  Brown   3,337 662 19.84%  Bureau   23,661 7,446 31.47%  Calhoun   3,542 905 25.55%  Carroll   10,449 3,329 31.86%  Cass   7,704 1,819 23.61%  Champaign   119,979 31,574 26.32%  Christian   20,925 4,294 20.52%  Clark   11,886 4,826 40.6%  Clay   8,809 2,935 33.32%  Clinton   24,486 5,462 22.31%  Coles   29,515 9,238 31.3%  Cook   [ note 1]     3,043,887 938,639 30.84%  Crawford   12,328 4,239 34.39%  Cumberland   7,636 3,030 39.68%  DeKalb   56,946 14,531 25.52%  DeWitt   10,885 2,773 25.48%  Douglas   11,564 3,816 33%  DuPage   633,638 157,671 24.88%  Edgar   11,968 2,077 17.35%  Edwards   4,342 1,779 40.97%  Effingham   23,564 6,023 25.56%  Fayette   13,572 3,218 23.71%  Ford   8,664 2,336 26.96%  Franklin   28,534 5,380 18.85%  Fulton   25,423 5,349 21.04%  Gallatin   3,765 1,327 35.25%  Greene   8,891 1,922 21.62%  Grundy   33,916 8,070 23.79%  Hamilton   5,643 1,631 28.9%  Hancock   12,244 2,562 20.92%  Hardin   3,176 900 28.34%  Henderson   4,847 1,278 26.37%  Henry   35,896 7,645 21.3%  Iroquois   17,933 4,696 26.19%  Jackson   31,777 8,683 27.32%  Jasper   6,859 2,314 33.74%  Jefferson   23,547 5,680 24.12%  Jersey   15,188 3,073 20.23%  Jo Daviess   15,938 3,708 23.27%  Johnson   8,834 2,448 27.71%  Kane   305,679 65,419 21.4%  Kankakee   67,383 11,976 17.77%  Kendall   72,920 15,883 21.78%  Knox   32,995 6,517 19.75%  Lake   439,860 98,944 22.49%  LaSalle   69,838 16,185 23.18%  Lawrence   8,737 1,546 17.69%  Lee   22,216 6,147 27.67%  Livingston   21,221 6,776 31.93%  Logan   18,163 5,688 31.32%  Macon   74,132 16,732 22.57%  Macoupin   32,632 6,727 20.61%  Madison   174,508 43,928 25.17%  Marion   24,318 4,642 19.09%  Marshall   8,253 2,892 35.04%  Mason   9,040 2,007 22.2%  Massac   10,484 3,183 30.36%  McDonough   18,905 6,078 32.15%  McHenry   223,579 48,504 21.69%  McLean   108,708 28,516 26.23%  Menard   9,089 3,061 33.68%  Mercer   12,125 2,352 19.4%  Monroe   25,313 4,012 15.85%  Montgomery   15,873 5,521 34.78%  Morgan   21,747 6,244 28.71%  Moultrie   8,548 2,918 34.14%  Ogle   30,493 8,468 27.77%  Peoria   113,911 23,250 20.41%  Perry   14,561 2,901 19.92%  Piatt   12,091 5,378 44.48%  Pike   10,266 2,548 24.82%  Pope   2,989 823 27.53%  Pulaski   4,395 1,252 28.49%  Putnam   4,269 1,181 27.66%  Randolph   21,563 3,680 17.07%  Richland   11,517 4,318 37.49%  Rock Island   86,055 17,265 20.06%  Saline   16,361 4,578 27.98%  Sangamon   131,964 31,047 23.53%  Schuyler   5,362 1,350 25.18%  Scott   3,615 1,411 39.03%  Shelby   14,595 4,038 27.67%  Stark   4,100 1,510 36.83%  St. Clair   190,018 35,514 18.69%  Stephenson   34,036 8,488 24.94%  Tazewell   89,252 24,919 27.92%  Union   11,849 3,196 26.97%  Vermilion   45,711 9,999 21.87%  Wabash   8,459 2,110 24.94%  Warren   11,616 2,288 19.7%  Washington   9,601 2,944 30.66%  Wayne   12,193 3,878 31.81%  White   10,218 2,557 25.02%  Whiteside   37,379 8,995 24.06%  Will   431,906 95,945 22.21%  Williamson   44,661 9,572 21.43%  Winnebago   176,057 49,517 28.13%  Woodford   25,792 8,288 32.13% Total 7,945,074 2,103,634 26.48% 
General election For the general election, turnout was 57.23%, with 4,635,541 votes cast. [ 3]     The Illinois State Board of Elections reported that this general election turnout rate was the third-highest for a midterm election over the past forty years. [ 4]     The Illinois State Board of Elections also reported that the total number of votes cast set a record high. [ 4]     Voter registration, at 8.1 million, also sat at a record high. [ 4]    
Turnout was considered high in the United States during the 2018 midterm elections , with it being the highest national midterm turnout since 1914 . [ 5]    
Turnout by county [ 3]     
County Registration Votes cast Turnout%  Adams   47,811 24,611 51.48%  Alexander   5,354 2,278 42.55%  Bond   11,197 6,723 60.04%  Boone   33,054 18,176 54.99%  Brown   3,509 1,934 55.12%  Bureau   23,847 13,840 58.04%  Calhoun   3,559 2,377 66.79%  Carroll   10,682 6,039 56.53%  Cass   7,774 4,683 60.24%  Champaign   124,057 80,112 64.58%  Christian   21,209 13,027 61.42%  Clark   11,936 6,249 52.35%  Clay   8,948 4,956 55.39%  Clinton   24,810 14,269 57.51%  Coles   30,551 17,385 56.9%  Cook   [ note 2]     3,090,800 1,795,518 58.09%  Crawford   12,624 7,022 55.62%  Cumberland   7,712 4,400 57.05%  DeKalb   60,754 36,610 60.26%  DeWitt   11,083 6,286 56.72%  Douglas   11,701 6,499 55.54%  DuPage   639,752 370,249 57.87%  Edgar   12,106 6,264 51.74%  Edwards   4,406 2,468 56.01%  Effingham   23,873 14,621 61.24%  Fayette   13,474 8,011 59.46%  Ford   8,803 5,061 57.49%  Franklin   28,743 15,632 54.39%  Fulton   25,576 12,727 49.76%  Gallatin   3,720 2,205 59.27%  Greene   8,946 4,441 49.64%  Grundy   33,041 19,646 59.46%  Hamilton   5,666 3,677 64.9%  Hancock   12,431 7,143 57.46%  Hardin   2,980 1,774 59.53%  Henderson   4,836 2,736 56.58%  Henry   34,493 19,694 57.1%  Iroquois   17,968 10,388 57.81%  Jackson   39,503 20,693 52.38%  Jasper   6,882 4,577 66.51%  Jefferson   24,002 14,264 59.43%  Jersey   15,544 8,905 57.29%  Jo Daviess   16,164 9,414 58.24%  Johnson   8,879 5,343 60.18%  Kane   314,170 172,056 54.77%  Kankakee   68,513 37,012 54.02%  Kendall   78,788 45,534 57.79%  Knox   33,475 18,125 54.14%  Lake   448,295 254,217 56.71%  LaSalle   71,111 40,691 57.22%  Lawrence   8,830 4,410 49.94%  Lee   22,496 12,742 56.64%  Livingston   21,591 12,261 56.79%  Logan   18,396 10,246 55.7%  Macon   75,161 39,738 52.87%  Macoupin   32,151 18,458 57.41%  Madison   180,511 105,432 58.41%  Marion   24,747 12,786 51.67%  Marshall   8,303 4,783 57.61%  Mason   9,112 5,334 58.54%  Massac   10,650 5,507 51.71%  McDonough   18,464 10,368 56.15%  McHenry   235,593 117,838 50.02%  McLean   109,316 68,087 62.28%  Menard   9,172 5,519 60.17%  Mercer   12,357 7,130 57.7%  Monroe   26,035 15,754 60.51%  Montgomery   16,338 11,721 71.74%  Morgan   22,026 11,870 53.89%  Moultrie   8,547 5,226 61.14%  Ogle   32,316 19,267 59.62%  Peoria   117,449 65,865 56.08%  Perry   14,475 8,672 59.91%  Piatt   12,141 7,730 63.67%  Pike   10,433 6,693 64.15%  Pope   3,004 1,813 60.35%  Pulaski   4,434 2,488 56.11%  Putnam   4,289 2,645 61.67%  Randolph   21,517 12,464 57.93%  Richland   11,599 6,192 53.38%  Rock Island   100,163 51,283 51.2%  Saline   16,441 9,773 59.44%  Sangamon   135,830 87,193 64.19%  Schuyler   5,293 3,176 60%  Scott   3,470 2,098 60.46%  Shelby   14,878 9,399 63.17%  Stark   4,093 2,099 51.28%  St. Clair   192,407 99,849 51.89%  Stephenson   34,461 16,612 48.21%  Tazewell   90,595 52,368 57.8%  Union   12,098 7,693 63.59%  Vermilion   49,519 23,559 47.58%  Wabash   8,004 4,056 50.67%  Warren   11,612 6,177 53.19%  Washington   9,777 6,205 63.47%  Wayne   12,118 6,065 50.05%  White   10,300 6,006 58.31%  Whiteside   37,945 21,723 57.25%  Will   429,647 249,682 58.11%  Williamson   45,987 27,752 60.35%  Winnebago   177,945 96,765 54.38%  Woodford   26,224 16,407 62.56% Total 8,099,372 4,635,541 57.23% 
Federal elections United States House All of Illinois' 18 seats in the United States House of Representatives  were up for election in 2018.
The Democratic Party flipped two Republican-held seats, making the composition of Illinois' House delegation 13 Democrats and five Republicans.
Secretary of state Incumbent Democratic secretary of state  Jesse White , who had been in office since 1999, initially announced in August 2015 that he would retire. [ 9]     On August 17, 2017, White reversed this decision and announced that he would run for re-election to a sixth term. [ 10]     Governing    magazine projected the race as "safe Democratic". [ 11]    
State senate One-third of the seats of the Illinois Senate  were up for election in 2018.
References  ↑      "How Illinois Democrats won a statewide sweep and 2 pivotal congressional seats in the midterm elections" . Chicago Tribune. November 7, 2018. Retrieved June 25,  2020 .  1    2      "Voter Turnout" . www.elections.il.gov . Illinois State Board of Elections. Retrieved March 22,  2020 . [  permanent dead link    ]  1    2      "Voter Turnout" . www.elections.il.gov . Illinois State Board of Elections. Retrieved March 22,  2020 . [  permanent dead link    ]  1    2    3      "VOTER TURNOUT, CYBERSECURITY, AUTOMATIC VOTER REGISTRATION MARK EVENTFUL YEAR FOR SBE"  (PDF) . www.elections.il.gov . Illinois State Board of Elections. December 21, 2018. Retrieved March 22,  2020 .  ↑     Aytaç, S. Erdem; Stokes, Susan (November 20, 2018). "Americans just set a turnout record for the midterms, voting at the highest rate since 1914. This explains why" .  Washington  Post .  1    2    3    4    5    6    7    8    9    10      "2018 GENERAL PRIMARY - Election Results" . Illinois State Board of Elections .  1    2    3    4    5      "2018 GENERAL ELECTION - Election Results" . Illinois State Board of Elections .  ↑     Pearson, Rick (May 14, 2017). "Boxed in by father, Lisa Madigan seeks fifth term as Illinois attorney general" .  Chicago Tribune   . Retrieved May 15,  2017 .  ↑     Schlikerman, Becky (August 20, 2015). "Secretary of State Jesse White won't seek re-election" .  Chicago Sun-Times   . Retrieved July 19,  2016 .  ↑     Garcia, Monique (August 17, 2017). "Secretary of State Jesse White says he'll run for a record sixth term" .  Chicago Tribune   . Retrieved August 17,  2017 .  ↑     Jacobson, Louis (June 4, 2018). "Secretary of State Races Are More Competitive and Important Than Ever" . Governing. Retrieved September 22,  2019 .  1    2     "Rauner faces war on two fronts as Republican challenger Ives attacks ",  Chicago Tribune   , December 4, 2017. Retrieved December 5, 2017.  ↑     Sterrett, Craig (February 12, 2018). "State, local candidates woo Democrats at La Salle" . LaSalle News-Tribune . Archived from the original  on February 12, 2018. Retrieved February 28,  2018 .  ↑     Bishop, Greg (April 3, 2017). "Medical cannabis dispensary and third-party candidates look forward after court victory" . Illinois News Network . Retrieved February 28,  2018 .  ↑      "Illinois Supreme Court elections, 2018" . Ballotpedia . Retrieved April 2,  2020 .  ↑      "Illinois intermediate appellate court elections, 2018" . Ballotpedia . Retrieved April 2,  2020 . External links 
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