# 2020 United States House of Representatives elections in Illinois

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vte :
The 2020 United States House of Representatives elections in Illinois were held on November 3, 2020, to elect the 18 U.S. representatives from the state of Illinois, one from each of the state's 18 congressional districts. The elections coincided with the 2020 U.S. presidential election, as well as other elections to the House of Representatives, elections to the United States Senate, various state and local elections, and the Illinois Fair Tax.

## Statewide

Popular vote
Democratic
57.10%
Republican
41.13%
Other
1.78% :
House seats
Democratic
72.22%
Republican
27.78% :

### By district

Results of the 2020 United States House of Representatives elections in Illinois by district:
| District | Democratic | Democratic | Republican | Republican | Others | Others | Total | Total | Result |
| District | Votes | % | Votes | % | Votes | % | Votes | % | Result |
| District 1 | 239,943 | 73.80% | 85,027 | 26.15% | 153 | 0.05% | 325,123 | 100.0% | Democratic hold |
| District 2 | 234,896 | 78.81% | 63,142 | 21.19% | 0 | 0.00% | 298,038 | 100.0% | Democratic hold |
| District 3 | 172,997 | 56.38% | 133,851 | 43.62% | 0 | 0.00% | 306,848 | 100.0% | Democratic hold |
| District 4 | 187,219 | 84.05% | 35,518 | 15.95% | 0 | 0.00% | 222,737 | 100.0% | Democratic hold |
| District 5 | 255,661 | 70.77% | 96,200 | 26.63% | 9,410 | 2.60% | 361,271 | 100.0% | Democratic hold |
| District 6 | 213,777 | 52.82% | 183,891 | 45.43% | 7,079 | 1.75% | 404,747 | 100.0% | Democratic hold |
| District 7 | 249,383 | 80.41% | 41,390 | 13.35% | 19,355 | 6.24% | 310,128 | 100.0% | Democratic hold |
| District 8 | 186,251 | 73.16% | 0 | 0.00% | 68,327 | 26.84% | 254,578 | 100.0% | Democratic hold |
| District 9 | 262,045 | 70.98% | 107,125 | 29.02% | 0 | 0.00% | 369,170 | 100.0% | Democratic hold |
| District 10 | 202,402 | 63.87% | 114,442 | 36.12% | 30 | 0.01% | 316,874 | 100.0% | Democratic hold |
| District 11 | 194,557 | 63.30% | 112,807 | 36.70% | 13 | 0.00% | 307,377 | 100.0% | Democratic hold |
| District 12 | 127,577 | 39.57% | 194,839 | 60.43% | 0 | 0.00% | 322,416 | 100.0% | Republican hold |
| District 13 | 151,648 | 45.54% | 181,373 | 54.46% | 0 | 0.00% | 333,021 | 100.0% | Republican hold |
| District 14 | 203,209 | 50.67% | 197,835 | 49.33% | 8 | 0.00% | 401,052 | 100.0% | Democratic hold |
| District 15 | 88,559 | 26.55% | 244,947 | 73.45% | 0 | 0.00% | 333,506 | 100.0% | Republican hold |
| District 16 | 119,313 | 35.28% | 218,839 | 64.71% | 7 | 0.00% | 338,159 | 100.0% | Republican hold |
| District 17 | 156,011 | 52.02% | 143,863 | 47.97% | 21 | 0.01% | 299,895 | 100.0% | Democratic hold |
| District 18 | 110,039 | 29.59% | 261,840 | 70.41% | 0 | 0.00% | 371,879 | 100.0% | Republican hold |
| Total | 3,355,487 | 57.10% | 2,416,929 | 41.13% | 104,403 | 1.78% | 5,876,819 | 100.0% | |

## District 1

The 1st district takes in the South Side of Chicago, the southern suburbs of Chicago, and continues southwest to Joliet. The incumbent was Democrat Bobby Rush, who was re-elected with 73.5% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Bobby Rush, incumbent U.S. representative

##### Eliminated in primary

* Robert Emmons Jr., nonprofit executive
* Sarah Gad, law student and opioid recovery advocate
* Ameena Matthews, community activist

#### Endorsements

Organizations
* Planned Parenthood Action Fund
* Sierra Club
Newspapers
* The Chicago Maroon
* Chicago Tribune
Organizations
* Brand New Congress
* Sunrise Movement

#### Forum

2020 Illinois's 1st congressional district candidate forum :
| No. | Date | Host | Moderator | Link | Democratic | Democratic | Democratic | Democratic |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | | | | |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Robert Emmons Jr. | Sarah Gad | Ameena Matthews | Bobby Rush |
| 1 | Jan. 27, 2020 | First Unitarian Church of Chicago Indivisible Chicago South Side | Esther Peters | | P | P | A | P |

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bobby Rush (incumbent) | 94,863 | 71.5 |
| | Democratic | Sarah Gad | 13,783 | 10.4 |
| | Democratic | Robert Emmons Jr. | 13,628 | 10.3 |
| | Democratic | Ameena Matthews | 10,409 | 7.8 |
| Total votes | Total votes | Total votes | 132,683 | 100.0 |

### Republican primary
#### Nominee

* Philanise White, renal technician

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Philanise White | 10,134 | 100.0 |
| | Republican | Richard Mayers (write-in) | 1 | 0.0 |
| Total votes | Total votes | Total votes | 10,135 | 100.0 |

### Third parties
#### Removed

* Ruth Pellegrini (independent)

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 1st congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Bobby Rush (incumbent) | 239,943 | 73.80 | +0.29% |
| | Republican | Philanise White | 85,027 | 26.15 | +6.39% |
| | Write-in | Write-in | 153 | 0.05 | N/A |
| Total votes | Total votes | Total votes | 325,123 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 2

The 2nd district encompasses South Side Chicago and its southern suburbs, including eastern Will County and Kankakee County. The incumbent was Democrat Robin Kelly, who was re-elected with 81.1% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Robin Kelly, incumbent U.S. representative

##### Eliminated in primary

* Marcus Lewis, postal worker

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Robin Kelly (incumbent) | 94,767 | 84.8 |
| | Democratic | Marcus Lewis | 16,942 | 15.2 |
| Total votes | Total votes | Total votes | 111,709 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Theresa Raborn, activist

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Theresa Raborn | 12,181 | 100.0 |
| Total votes | Total votes | Total votes | 12,181 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 2nd congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Robin Kelly (incumbent) | 234,896 | 78.81 | −2.24% |
| | Republican | Theresa Raborn | 63,142 | 21.19 | +2.25% |
| Total votes | Total votes | Total votes | 298,038 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 3

The 3rd district includes western and southwestern suburbs of Chicago as far as the DuPage County border, as well part of southwest Chicago itself. The incumbent was Democrat Dan Lipinski, who was re-elected with 73.0% of the vote in 2018. On March 17, 2020, Marie Newman defeated Dan Lipinski in the Democratic primary in a rematch of their 2018 race.

### Democratic primary
#### Candidates
##### Nominee

* Marie Newman, businesswoman and candidate for Illinois's 3rd congressional district in 2018

##### Eliminated in primary

* Rush Darwish, photographer and former broadcaster
* Charles Hughes
* Dan Lipinski, incumbent U.S. representative

##### Withdrawn

* Abe Matthew, attorney (endorsed Newman)

##### Endorsements

U.S. representatives
* Cheri Bustos, Chair of the Democratic Congressional Campaign Committee, representative from Illinois's 17th congressional district
Newspapers
* Chicago Tribune
Organizations
* American Federation of State, County and Municipal Employees Council 31
* American Train Dispatchers Association
* Brotherhood of Locomotive Engineers and Trainmen
* Brotherhood of Maintenance of Way Employees
* Brotherhood of Railroad Signalmen
* Chicago Federation of Labor
* Chicago Fraternal Order of Police Lodge No. 7
* Democratic Congressional Campaign Committee
* Democrats for Life
* Illinois AFL–CIO
* International Association of Sheet Metal, Air, Rail and Transportation Workers
* International Brotherhood of Electrical Workers (IBEW) Local 134
* National Right to Life
* Susan B. Anthony List
* Transportation Communications Union / International Association of Machinists and Aerospace Workers
Individuals
* James Zogby, founder and president of the Arab American Institute, former member of the executive committee of the Democratic National Committee
U.S. senators
* Cory Booker, U.S. senator from New Jersey and former candidate in the 2020 Democratic Party presidential primaries
* Kirsten Gillibrand, U.S. senator from New York and former candidate in the 2020 Democratic Party presidential primaries
* Bernie Sanders, U.S. senator from Vermont and candidate in the 2020 Democratic Party presidential primaries
* Elizabeth Warren, U.S. senator from Massachusetts and former candidate in the 2020 Democratic Party presidential primaries
U.S. representatives
* Pramila Jayapal, representative from Washington's 7th congressional district, Co-Chair of the Congressional Progressive Caucus
* Alexandria Ocasio-Cortez, representative from New York's 14th congressional district
* Mark Pocan, U.S. representative from WI-2 (2013–present), Co-Chair of the Congressional Progressive Caucus
* Ayanna Pressley, representative from Massachusetts's 7th congressional district
* Jan Schakowsky, representative from Illinois's 9th congressional district
State legislators
* Kelly Cassidy, Illinois state representative for the 14th district
* Laura Fine, Illinois state senator for the 9th district
* Will Guzzardi, Illinois state representative for the 44th district
* Elizabeth Hernandez, Illinois state representative for the 24th district
* Toi Hutchinson, former Illinois state senator for the 40th district
* Theresa Mah, Illinois state representative for the 2nd district
* Delia Ramirez, Illinois state representative for the 4th district
* Ann Williams, Illinois state representative for the 11th district
Municipal officials
* George Cardenas, alderman for Chicago's 12th ward
* Stephanie Coleman, alderman for Chicago's 16th ward
* Maria Hadden, alderman for Chicago's 49th ward
* Lori Lightfoot, Mayor of Chicago
* Carlos Ramirez-Rosa, alderman for Chicago's 35th ward
* Mike Rodriguez, alderman for Chicago's 22nd ward
* Byron Sigcho-Lopez, alderman for Chicago's 25th ward
* Anna M. Valencia, city clerk of Chicago
* Andre Vasquez, alderman for Chicago's 40th ward
Publications
* The Chicago Sun-Times
Unions
* American Postal Workers Union Local 604-605
* SEIU Illinois State Council
Organizations
* Democracy for America
* Emily's List
* Giffords
* Human Rights Campaign (post-primary)
* Illinois NOW
* Indivisible Brookfield
* Indivisible Chicago
* Justice Democrats
* League of Conservation Voters Action Fund
* MoveOn
* NARAL Pro-Choice America
* National Women's Political Caucus
* Our Revolution Chicago-Southwest Side
* Peace Action
* Planned Parenthood Action Fund
* Population Connection Action Fund
* Progressive Change Campaign Committee
* Progressive Democrats of America
* Richard Stallman
* Sierra Club
* Sunrise Movement

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Dan Lipinski | Marie Newman | Rush Darwish | Charles Hughes | Undecided |
| Expedition Strategies (D) | January 7–9, 2020 | 500 (LV) | ± 4.4% | 47% | 25% | 2% | 1% | 26% |

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Marie Newman | 52,384 | 47.3 |
| | Democratic | Dan Lipinski (incumbent) | 49,568 | 44.7 |
| | Democratic | Rush Darwish | 6,351 | 5.7 |
| | Democratic | Charles Hughes | 2,549 | 2.3 |
| Total votes | Total votes | Total votes | 110,852 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Mike Fricilone, Republican minority leader of the Will County Board

##### Eliminated in primary

* Arthur Jones, former chairman of the American Nazi Party, Holocaust denier, white supremacist, and nominee for Illinois's 3rd congressional district in 2018
* Catherine O'Shea, real estate broker

##### Endorsements

State legislators
* Bill Brady, Minority Leader of Illinois Senate
* Jim Durkin, Minority Leader of Illinois House of Representatives
Newspapers
* Chicago Sun-Times
* Chicago Tribune
Unions
* Chicago Police Union

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mike Fricilone | 9,804 | 57.5 |
| | Republican | Catherine O'Shea | 5,541 | 32.5 |
| | Republican | Arthur Jones | 1,708 | 10.0 |
| | Republican | Richard Mayers | 2 | 0.0 |
| Total votes | Total votes | Total votes | 17,055 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Marie Newman (D) | Mike Fricilone (R) | Other |
| Ogden & Fry (R) | September 7, 2020 | 759 (LV) | ± 3.63% | 46% | 44% | 10% |

#### Results

Illinois's 3rd congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Marie Newman | 172,997 | 56.38 | −16.63% |
| | Republican | Mike Fricilone | 133,851 | 43.67 | +17.75% |
| Total votes | Total votes | Total votes | 306,848 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 4

The 4th district takes in the heavily Hispanic areas of West Side and South Side Chicago. The incumbent was Democrat Chuy García, who was elected with 86.6% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Chuy García, incumbent U.S. representative

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jesús "Chuy" García (incumbent) | 88,874 | 100.0 |
| Total votes | Total votes | Total votes | 88,874 | 100.0 |

### Republican primary
#### Candidates

Christopher Lasky was originally the only Republican candidate to file, and was the sole Republican candidate in the primary. Lasky died on December 23, 2019, but remained on the ballot as the only candidate winning the nomination, and the Illinois Republican Party nominated Jesus Solorio as his replacement.

##### Nominee

* Jesus E. Solorio Jr., Chicago Republican Party vice-chair and 23rd Ward Republican committeeman (nominated by party)

##### Winner in primary

* Christopher Lasky, former member of the board of trustees for the Stickney-Forest View Public Library District (deceased, December 23, 2019)

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Christopher Lasky | 4,059 | 100.0 |
| Total votes | Total votes | Total votes | 4,059 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 4th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jesús "Chuy" García (incumbent) | 187,219 | 84.05 | −2.54% |
| | Republican | Jesus E. Solorio Jr. | 35,518 | 15.95 | +2.54% |
| Total votes | Total votes | Total votes | 222,737 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 5

The 5th district is based in North Side Chicago and its northern and western suburbs, including Elmhurst, Elmwood Park, Franklin Park, Hinsdale, La Grange Park, Norridge, Northlake, River Grove, Schiller Park, and Oakbrook Terrace. The incumbent was Democrat Mike Quigley, who was re-elected with 76.7% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Mike Quigley, incumbent U.S. representative

##### Eliminated in primary

* Brian Burns, attorney

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Quigley (incumbent) | 97,865 | 75.1 |
| | Democratic | Brian Burns | 32,440 | 24.9 |
| Total votes | Total votes | Total votes | 130,305 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Tom Hanson, nominee for Illinois's 5th congressional district in 2018

##### Eliminated in primary

* Kimball Ladien

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Tom Hanson | 9,764 | 83.1 |
| | Republican | Kimball Ladien | 1,993 | 16.9 |
| Total votes | Total votes | Total votes | 11,757 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 5th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Mike Quigley (incumbent) | 255,661 | 70.77 | −5.89% |
| | Republican | Tom Hanson | 96,200 | 26.63 | +3.30% |
| | Green | Thomas J. Wilda | 9,408 | 2.60 | N/A |
| | Write-in | Write-in | 2 | 0.00 | N/A |
| Total votes | Total votes | Total votes | 361,271 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 6

The 6th district encompasses the western Chicago suburbs, and includes parts of Cook, DuPage, Lake, Kane, and McHenry counties. The incumbent was Democrat Sean Casten, who flipped the district and was elected with 53.6% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Sean Casten, incumbent U.S. representative

#### Endorsements
##### Former U.S. Executive Branch officials

* Barack Obama, 44th president of the United States
U.S. senators
* Tammy Duckworth, US Senator from Illinois
* Dick Durbin, US Senator from Illinois
* Elizabeth Warren, US Senator from Massachusetts and former US presidential candidate in 2020
Organizations
* 314 Action
* End Citizens United
* J Street PAC
* League of Conservation Voters Action Fund
* NARAL Pro-Choice America
* Planned Parenthood Action Fund
* Population Connection
* Sierra Club
Individuals
* Pat Brady, former Chair of the Illinois Republican Party

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Sean Casten (incumbent) | 82,909 | 100.0 |
| Total votes | Total votes | Total votes | 82,909 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Jeanne Ives, former state representative and Republican primary candidate for Governor of Illinois in 2018

##### Eliminated in primary

* Jay Kinzler, transplant surgeon and U.S. Army Reserve colonel

##### Withdrawn

* Evelyn Sanguinetti, former lieutenant governor of Illinois

##### Declined

* Greg Hart, DuPage County board member

#### Endorsements

U.S. senators
* Ted Cruz, U.S. senator from Texas
U.S. representatives
* Jim Jordan, U.S. representative from Ohio's 4th congressional district
* Kevin McCarthy, House Minority Leader and U.S. Representative from California's 23rd congressional district
* Peter Roskam, former U.S. representative from Illinois's 6th congressional district
Cabinet-level officials
* Mark Meadows, current White House Chief of Staff
Newspapers
* Chicago Tribune
Individuals
* Stephen Moore, writer and co-founder of Club for Growth
Organizations
* Club for Growth
* FreedomWorks
* House Freedom Fund
* National Federation of Independent Business
* National Republican Congressional Committee
* Susan B. Anthony List
* U.S. Chamber of Commerce

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Jeanne Ives | 29,144 | 70.9 |
| | Republican | Jay Kinzler | 12,017 | 29.1 |
| | Republican | Richard Mayers | 1 | 0.0 |
| Total votes | Total votes | Total votes | 41,162 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Likely D | October 11, 2020 |
| Daily Kos | Safe D | October 29, 2020 |
| RCP | Likely D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Sean Casten (D) | Jeanne Ives (R) | Undecided |
| Ogden & Fry (R) | December 17, 2019 | 575 (LV) | ± 4.17% | 38% | 47% | 16% |
with Generic Democrat and Generic Republican
| Poll source | Date(s) administered | Sample size | Margin of error | Generic Democrat | Generic Republican | Undecided |
| Ogden & Fry/Jeanne for Congress | December 17, 2019 | 575 (LV) | ± 4.17% | 49% | 43% | 8% |

#### Results

Illinois's 6th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Sean Casten (incumbent) | 213,777 | 52.82 | −0.75% |
| | Republican | Jeanne Ives | 183,891 | 45.43 | −0.99% |
| | Libertarian | Bill Redpath | 7,079 | 1.75 | N/A |
| Total votes | Total votes | Total votes | 404,747 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 7

The 7th district encompasses West Side Chicago and downtown Chicago, including Bellwood, Forest Park, Oak Park, Maywood, and Westchester. The incumbent was Democrat Danny K. Davis, who was re-elected with 87.6% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Danny K. Davis, incumbent U.S. representative

##### Eliminated in primary

* Anthony Clark, teacher, community activist, and candidate for Illinois's 7th congressional district in 2018
* Kina Collins, community organizer and gun control activist
* Kristine Schanbacher, attorney

#### Endorsements

Local officials
* Rossana Rodriguez-Sanchez, Chicago, Illinois alderwoman from Ward 33 since 2019
Notable individuals
* Cori Bush, activist, organizer, nurse, pastor, Democratic candidate for U.S. Representative from MO-01(2018, 2020)
* Paula Jean Swearengin, social and environmental activist; candidate for U.S. Senate from West Virginia in 2018 and 2020
Newspapers
* The Chicago Sun-Times
Organizations
* Brand New Congress
* Democratic Socialists of America - Chicago, Illinois, chapter
* Our Revolution - Buffalo Grove, Illinois, chapter
* The People for Bernie Sanders
Organizations
* Blue America
* Center for Popular Democracy
* Good Kids Mad City
* Illinois Youth Climate Strike
* Northside Democracy for America
Elected officials
* Katie Avalos, member of the Illinois District 90 school board
* Erika Bachner, River Forest Village Trustee
* Susan Buchanan, Oak Park Village Trustee
* Patty Henek, River Forest Village Trustee
* Anna Moeller, Illinois House Representative for the 43rd district
* Jackie Moore, president of the Illinois District 200 school board
* Jeanette Taylor, alderman for the 20th ward in Chicago City Council
* Arti Walker-Peddakotla, Oak Park Village Trustee
Individuals
* Channyn Lynne Parker, transgender rights activist
Organizations
* J Street PAC
* Planned Parenthood Action Fund
* Sierra Club

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Danny K. Davis (incumbent) | 79,813 | 60.2 |
| | Democratic | Kina Collins | 18,399 | 13.8 |
| | Democratic | Anthony Clark | 17,206 | 13.0 |
| | Democratic | Kristine Schanbacher | 17,187 | 13.0 |
| Total votes | Total votes | Total votes | 132,605 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Craig Cameron, candidate for Illinois's 7th congressional district in 2018

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Cameron | 3,799 | 100.0 |
| Total votes | Total votes | Total votes | 3,799 | 100.0 |

### Third parties
#### Candidates

* Tracy Jennings (independent), former public service administrator

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 7th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Danny K. Davis (incumbent) | 249,383 | 80.41 | −7.21% |
| | Republican | Craig Cameron | 41,390 | 13.35 | +0.97% |
| | Independent | Tracy Jennings | 19,355 | 6.24 | N/A |
| Total votes | Total votes | Total votes | 310,128 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 8

The 8th district is based in the northwestern suburbs of Chicago. The incumbent was Democrat Raja Krishnamoorthi, who was re-elected with 66.0% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Raja Krishnamoorthi, incumbent U.S. representative

##### Eliminated in primary

* Inam Hussain, social worker
* William Olson

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Raja Krishnamoorthi (incumbent) | 51,829 | 79.9 |
| | Democratic | William Olson | 8,441 | 13.0 |
| | Democratic | Inam Hussain | 4,563 | 7.1 |
| Total votes | Total votes | Total votes | 64,833 | 100.0 |

### Republican primary
#### Write-in candidates

* Joseph J Hantsch
* Richard Mayers

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Joseph J Hantsch (write-in) | 211 | 99.1 |
| | Republican | Richard Mayers (write-in) | 2 | 0.9 |
| Total votes | Total votes | Total votes | 213 | 100.0 |

### Third Parties
#### Libertarian Party
##### Nominee

* Preston Gabriel Nelson, inventor

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 8th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Raja Krishnamoorthi (incumbent) | 186,251 | 73.16 | +7.19% |
| | Libertarian | Preston Gabriel Nelson | 68,327 | 26.84 | N/A |
| Total votes | Total votes | Total votes | 254,578 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 9

The 9th district is based in the northern Chicago suburbs, including all or parts of Arlington Heights, Des Plaines, Evanston, Glenview, Lincolnwood, Morton Grove, Mount Prospect, Niles, Park Ridge, Prospect Heights, Skokie, Wilmette, and Winnetka. The incumbent was Democrat Jan Schakowsky, who was re-elected with 73.5% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Jan Schakowsky, incumbent U.S. representative

### Democratic primary
#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jan Schakowsky (incumbent) | 127,467 | 99.7 |
| | Democratic | Andrew Heldut (write-in) | 355 | 0.3 |
| Total votes | Total votes | Total votes | 127,822 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Sargis Sangari, former U.S. Army lieutenant colonel

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Sargis Sangari | 11,809 | 100.0 |
| | Republican | Richard Mayers (write-in) | 1 | 0.0 |
| Total votes | Total votes | Total votes | 11,809 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 9th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jan Schakowsky (incumbent) | 262,045 | 70.98 | −2.51% |
| | Republican | Sargis Sangari | 107,125 | 29.02 | +2.51% |
| Total votes | Total votes | Total votes | 369,170 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 10

The 10th district encompasses the North Shore and the northwestern suburbs of Chicago. The incumbent was Democrat Brad Schneider, who was re-elected with 65.6% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Brad Schneider, incumbent U.S. representative

##### Withdrawn

* Andrew Wang, progressive activist

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Brad Schneider (incumbent) | 79,126 | 99.9 |
| | Democratic | Adam Broad (write-in) | 115 | 0.1 |
| Total votes | Total votes | Total votes | 79,241 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Valerie Ramirez Mukherjee, venture capitalist

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Valerie Ramirez Mukherjee | 14,877 | 100.0 |
| Total votes | Total votes | Total votes | 14,877 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 10th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Brad Schneider (incumbent) | 202,402 | 63.87 | −1.72% |
| | Republican | Valerie Ramirez Mukherjee | 114,442 | 36.12 | +1.71% |
| | Write-in | Write-in | 30 | 0.01 | N/A |
| Total votes | Total votes | Total votes | 316,874 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 11

The 11th district covers the southwestern and western Chicago suburbs, including all or parts of Aurora, Bolingbrook, Darien, Joliet, Montgomery, Naperville, Lisle, Downers Grove, New Lenox, Shorewood, and Woodridge. The incumbent was Democrat Bill Foster, who was re-elected with 63.8% of the vote in 2018.

### Democratic primary
#### Candidates
##### Nominee

* Bill Foster, incumbent U.S. representative

##### Eliminated in primary

* Rachel Ventura, Will County board member

#### Endorsements

U.S. senators
* Dick Durbin, Senator from Illinois (1997-present)
Organizations
* 314 Action
* J Street PAC
* Planned Parenthood Action Fund
* Sierra Club
Labor unions
* Illinois AFL–CIO
Newspapers
* Chicago Sun-Times
* Chicago Tribune
Individuals
* Paul Dillon, actor
* Michael Shannon, actor, director, and musician
Organizations
* Brand New Congress
* Democratic Socialists of America - West Suburban Illinois chapter
* Friends of the Earth Action
* Our Revolution
* Sunrise Movement - Chicago, Illinois chapter

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bill Foster (incumbent) | 46,116 | 58.7 |
| | Democratic | Rachel Ventura | 32,422 | 41.3 |
| Total votes | Total votes | Total votes | 78,538 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Rick Laib, police sergeant with the Will County Sheriff's Office

##### Eliminated in primary

* Krishna Bansal, member of the Naperville Zoning and Planning Commission

#### Endorsements

Organizations
* Family Research Council
* National Right to Life Committee

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Rick Laib | 12,474 | 54.1 |
| | Republican | Krishna Bansal | 10,603 | 45.9 |
| Total votes | Total votes | Total votes | 23,077 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Safe D | October 20, 2020 |
| Politico | Safe D | October 11, 2020 |
| Daily Kos | Safe D | October 26, 2020 |
| RCP | Safe D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Results

Illinois's 11th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Bill Foster (incumbent) | 194,557 | 63.30 | −0.54% |
| | Republican | Rick Laib | 112,807 | 36.70 | +0.54% |
| | Write-in | Write-in | 13 | 0.00 | N/A |
| Total votes | Total votes | Total votes | 307,377 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 12

The 12th district takes in southwestern Illinois, taking in the suburbs of St. Louis and Metro Lakeland. The incumbent was Republican Mike Bost, who was re-elected with 51.6% of the vote in 2018.

### Republican primary
#### Candidates
##### Nominee

* Mike Bost, incumbent U.S. representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mike Bost (incumbent) | 40,222 | 100.0 |
| Total votes | Total votes | Total votes | 40,222 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Raymond Lenzi, former chancellor of Southern Illinois University

##### Eliminated in primary

* Joel Funk, financial consultant and U.S. Army veteran

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Raymond Lenzi | 27,015 | 50.3 |
| | Democratic | Joel Funk | 26,648 | 49.7 |
| Total votes | Total votes | Total votes | 53,663 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | October 21, 2020 |
| Inside Elections | Safe R | October 16, 2020 |
| Sabato's Crystal Ball | Safe R | October 20, 2020 |
| Politico | Lean R | October 11, 2020 |
| Daily Kos | Safe R | October 26, 2020 |
| RCP | Safe R | October 28, 2020 |
| Niskanen | Safe R | June 7, 2020 |

#### Endorsements

Organizations
* Indivisible
* Sierra Club

#### Results

Illinois's 12th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Mike Bost (incumbent) | 194,839 | 60.43 | +8.86% |
| | Democratic | Raymond Lenzi | 127,577 | 39.57 | −5.82% |
| Total votes | Total votes | Total votes | 322,416 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

## District 13

The 13th district encompasses parts of Bond, Champaign, Madison, McLean, and Sangamon counties, and all of Christian, Calhoun, De Witt, Greene, Jersey, Macon, Macoupin, Montgomery, and Piatt counties, including all or parts of the cities of Bloomington, Champaign, Decatur, Godfrey, Springfield, Taylorville, and Urbana. The incumbent was Republican Rodney Davis, who was re-elected with 50.4% of the vote in 2018.

### Republican primary
#### Candidates
##### Nominee

* Rodney Davis, incumbent U.S. representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Rodney Davis (incumbent) | 36,668 | 100.0 |
| Total votes | Total votes | Total votes | 36,668 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Betsy Dirksen Londrigan, former nonprofit leader, entrepreneur, and nominee for Illinois's 13th congressional district in 2018

##### Eliminated in primary

* Stefanie Smith, former sex worker and activist
Organizations
* Democratic Socialists of America - Central Illinois chapter
* Democratic Socialists of America - Champaign-Urbana, Illinois, chapter
* Rose Caucus
* Young Democratic Socialists of America - University of Illinois at Urbana–Champaign chapter

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Betsy Dirksen Londrigan | 48,766 | 76.5 |
| | Democratic | Stefanie Smith | 15,011 | 23.5 |
| Total votes | Total votes | Total votes | 63,777 | 100.0 |

### General election
#### Debate

2020 Illinois's 13th congressional district debate :
| No. | Date | Host | Moderator | Link | Republican | Democratic |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | | |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Rodney Davis | Betsey Dirksen Londrigan |
| 1 | Oct. 6, 2020 | Illinois Public Media League of Women Voters of Champaign County WCIA | Brian Mackey | | P | P |

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | October 21, 2020 |
| Inside Elections | Tossup | October 16, 2020 |
| Sabato's Crystal Ball | Lean R | October 20, 2020 |
| Politico | Tossup | October 11, 2020 |
| Daily Kos | Tossup | October 26, 2020 |
| RCP | Tossup | October 28, 2020 |
| Niskanen | Lean D (flip) | July 26, 2020 |

#### Endorsements

U.S. presidents
* Barack Obama, 44th president of the United States
U.S. vice presidents
* Joe Biden, 47th vice president of the United States and 2020 Democratic nominee for President
U.S. senators
* Dick Durbin, U.S. senator from Illinois
* Kamala Harris, U.S. senator from California and 2020 Democratic vice presidential nominee
State legislators
* Andy Manar, state senator
Labor unions
* AFSCME
* Illinois AFL–CIO
* Illinois Nurses Association
* International Brotherhood of Electrical Workers
* International Brotherhood of Teamsters
* United Food and Commercial Workers (UFCW Local 881)
* United Steelworkers
Newspapers
* News-Gazette
Organizations
* Alliance for Retired Americans
* Bend the Arc
* Congressional Black Caucus
* Council for a Livable World
* EMILY's List
* End Citizens United
* Everytown for Gun Safety
* Giffords
* Human Rights Campaign
* J Street
* Moms Demand Action
* NARAL Pro-Choice America
* National Committee to Preserve Social Security and Medicare
* National Organization for Women
* New Democrat Coalition
* Planned Parenthood Action Fund
* Sierra Club
Individuals
* Marie Newman, 2020 Democratic nominee for Illinois's 3rd Congressional District

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Rodney Davis (R) | Betsy Dirksen Londrigan (D) | Undecided |
| Tulchin Research (D) | October 1–6, 2020 | 400 (LV) | ± 4.9% | 43% | 48% | – |
| GBAO Strategies (D) | September 17–20, 2020 | 500 (LV) | ± 4.4% | 48% | 47% | – |
| RMG Research | July 27 – August 7, 2020 | 500 (RV) | ± 4.5% | 41% | 43% | 16% |

#### Results

Illinois's 13th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Rodney Davis (incumbent) | 181,373 | 54.46 | +4.08% |
| | Democratic | Betsy Dirksen Londrigan | 151,648 | 45.54 | −4.08% |
| Total votes | Total votes | Total votes | 333,021 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

## District 14

The 14th district encompasses the western Chicago exurbs, including all or parts of Batavia, Campton Hills, Crystal Lake, Geneva, Huntley, McHenry, Naperville, St. Charles, North Aurora, Oswego, Plainfield, Plano, Sycamore, Warrenville, Wauconda, Woodstock, and Yorkville. The incumbent was Democrat Lauren Underwood, who flipped the district and was elected with 52.5% of the vote in 2018.
On November 12, the race was called by the Associated Press for Underwood. On January 5, 2021, Jim Oberweis filed notice with the U.S. House of Representatives, challenging the results of the election.

### Democratic primary
#### Candidates
##### Nominee

* Lauren Underwood, incumbent U.S. representative, former Senior Advisor at the Department of Health and Human Services, and registered nurse

##### Endorsements

US presidents
* Barack Obama, 44th president of the United States
Local officials
* Pete Buttigieg, former mayor of South Bend, Indiana (2012–2020) and former candidate for 2020 Democratic presidential nomination
Individuals
* Alex Hirsch, writer, artist, and animator
Publications
* Daily Herald
Organizations
* 314 Action
* Black Economic Alliance
* Democracy for America
* League of Conservation Voters Action Fund
* Sierra Club

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lauren Underwood (incumbent) | 77,707 | 100.0 |
| Total votes | Total votes | Total votes | 77,707 | 100.0 |

### Republican primary
#### Nominee

* Jim Oberweis, state senator, nominee for U.S. Senate in 2014, nominee for Illinois's 14th congressional district in 2008, candidate for governor in 2006, and candidate for U.S. Senate in 2002 and 2004

#### Eliminated in primary

* Anthony Catella, U.S. Army veteran
* Jerry Evans
* Ted Gradel, businessman and youth basketball coach
* Catalina Lauf, former special adviser to U.S. Department of Commerce
* Jim Marter, businessman, former chairman of the Kendall County Republican Party, and candidate for U.S. Senate in 2016
* Sue Rezin, state senator

#### Withdrawn

* Danny Malouf, human resource director
* Matt Quigley, U.S. Navy veteran

#### Declined

* Allen Skillicorn, state representative

#### Endorsements

Organizations
* The New York Young Republican Club
U.S. Executive Branch officials
* Donald Trump, 45th president of the United States
U.S. senators
* Marco Rubio, U.S. senator from Florida
U.S. representatives
* Don Manzullo, former Representative IL-16 (1993–2013)
State-wide officials
* Leslie Munger, former Comptroller of Illinois
Newspapers
* Chicago Tribune
* Daily Herald

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Ted Gradel | Catalina Lauf | Jim Marter | Jim Oberweis | Sue Rezin | Undecided |
| McLaughlin and Associates | January 28–29, 2020 | 300 (LV) | ± 5.6% | 2% | 6% | 2% | 46% | 16% | 29% |
| McLaughlin and Associates | July 30 – August 4, 2019 | 200 (LV) | ± 6.9% | 4% | – | – | 56% | 8% | 33% |

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Jim Oberweis | 13,333 | 25.6 |
| | Republican | Sue Rezin | 11,879 | 22.8 |
| | Republican | Catalina Lauf | 10,451 | 20.1 |
| | Republican | Ted Gradel | 6,979 | 13.4 |
| | Republican | Jim Marter | 5,724 | 11.0 |
| | Republican | Jerry Evans | 2,609 | 5.0 |
| | Republican | Anthony Catella | 1,118 | 2.1 |
| Total votes | Total votes | Total votes | 52,093 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Likely D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Likely D | October 20, 2020 |
| Politico | Lean D | October 11, 2020 |
| Daily Kos | Likely D | October 29, 2020 |
| RCP | Lean D | October 28, 2020 |
| Niskanen | Lean D | June 7, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Lauren Underwood (D) | Jim Oberweis (R) | Undecided |
| McLaughlin and Associates (R) | July 30 – August 4, 2019 | 300 (LV) | ± 6.9% | 47% | 38% | 15% |

#### Results

Illinois's 14th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lauren Underwood (incumbent) | 203,209 | 50.67 | −1.83% |
| | Republican | Jim Oberweis | 197,835 | 49.33 | +1.83% |
| | Write-in | Write-in | 8 | 0.00 | N/A |
| Total votes | Total votes | Total votes | 401,052 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 15

The 15th district encompasses rural east-central and southeastern Illinois. The incumbent was Republican John Shimkus, who was re-elected with 70.9% of the vote in 2018. Shimkus announced he would not be seeking re-election on August 30, 2019. After briefly considering reversing his retirement plans, Shimkus reaffirmed his decision to not run on November 4, 2019.

### Republican primary
#### Candidates
##### Nominee

* Mary Miller, Oakland farm owner

##### Eliminated in primary

* Darren Duncan, Vermilion County treasurer
* Charles Ellington, family physician
* Kerry Wolff, vice president of the Altamont school board

##### Withdrawn

* Alex Walker, U.S. Air Force veteran

##### Declined

* Erika Harold, nominee for Illinois Attorney General in 2018 and former Miss America
* Mike Marron, state representative
* Kyle McCarter, U.S. Ambassador to Kenya and former state senator
* Dale Righter, state senator
* Chapin Rose, state senator
* John Shimkus, incumbent U.S. representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Miller | 48,129 | 57.4 |
| | Republican | Darren Duncan | 18,309 | 21.8 |
| | Republican | Kerry Wolff | 11,208 | 13.4 |
| | Republican | Charles Ellington | 6,200 | 7.4 |
| Total votes | Total votes | Total votes | 83,846 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Erika Weaver, member of the Mattoon school board

##### Eliminated in primary

* Kevin Gaither, nominee for Illinois's 15th congressional district in 2018
* John W. Hursey Jr., community activist
* Craig Morton, Salem city councilman

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Erika Weaver | 17,778 | 51.9 |
| | Democratic | Kevin Gaither | 7,653 | 22.3 |
| | Democratic | Craig Morton | 6,576 | 19.2 |
| | Democratic | John W. Hursey, Jr. | 2,244 | 6.5 |
| Total votes | Total votes | Total votes | 34,251 | 100.0 |

### General election
#### Endorsements

Federal officials
* Donald Trump, 45th president of the United States
Organizations
* Susan B. Anthony List

#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | October 21, 2020 |
| Inside Elections | Safe R | October 16, 2020 |
| Sabato's Crystal Ball | Safe R | October 20, 2020 |
| Politico | Safe R | October 11, 2020 |
| Daily Kos | Safe R | October 26, 2020 |
| RCP | Safe R | October 28, 2020 |
| Niskanen | Safe R | June 7, 2020 |

#### Results

Illinois's 15th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Mary Miller | 244,947 | 73.45 | +2.52% |
| | Democratic | Erika Weaver | 88,559 | 26.55 | −2.52% |
| Total votes | Total votes | Total votes | 333,506 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

## District 16

The 16th district encompasses north-central Illinois, taking in the east side of Rockford, Belvidere, Ottawa, and DeKalb. The incumbent was Republican Adam Kinzinger, who was re-elected with 59.1% of the vote in 2018.

### Republican primary
#### Candidates
##### Nominee

* Adam Kinzinger, incumbent U.S. representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Adam Kinzinger (incumbent) | 45,296 | 100.0 |
| Total votes | Total votes | Total votes | 45,296 | 100.0 |

### Democratic primary
#### Candidates
##### Nominee

* Dani Brzozowski, activist and chairwoman of LaSalle County Democrats

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dani Brzozowski | 50,811 | 100.0 |
| Total votes | Total votes | Total votes | 50,811 | 100.0 |

### Endorsements

U.S. senators
* Tammy Duckworth, IL
* Dick Durbin, IL
U.S. representatives
* Sean Casten, representative for Illinois's 6th congressional district
* Bill Foster, representative for Illinois's 11th congressional district
* Jesús "Chuy" García, representative for Illinois's 4th congressional district
* Robin Kelly, representative for Illinois's 2nd congressional district
* Jan Schakowsky, representative for Illinois's 9th congressional district
* Lauren Underwood, representative for Illinois's 14th congressional district
Statewide elected officials
* Mike Frerichs, Illinois state treasurer
State senators
* Daniel Biss, former Illinois state senator, Democratic gubernatorial candidate in 2018
* Melinda Bush, state senator
State representatives
* Kelly Cassidy, state representative
Congressional candidates
* Marie Newman, Democratic nominee for Illinois's 3rd congressional district
Unions
* AFL–CIO
* Illinois Federation of Teachers
* Illinois Nurses Association
* Teamsters Joint Council 25
Organizations
* Congressional Black Caucus PAC
* End Citizens United
* Independent Voters of Illinois Independent Precinct Organization
* Indivisible
* NARAL Pro-Choice America
* National Organization for Women
* Our Revolution Will County Progressives
* Planned Parenthood
* Sierra Club
* Sunrise Movement DeKalb
Individuals
* Gloria Steinem, feminist, journalist, activist
Organization
* Citizens for Responsible Energy Solutions

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | October 21, 2020 |
| Inside Elections | Safe R | October 16, 2020 |
| Sabato's Crystal Ball | Safe R | October 20, 2020 |
| Politico | Likely R | October 11, 2020 |
| Daily Kos | Safe R | October 26, 2020 |
| RCP | Safe R | October 28, 2020 |
| Niskanen | Safe R | June 7, 2020 |

#### Results

Illinois's 16th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Adam Kinzinger (incumbent) | 218,839 | 64.71 | +5.59% |
| | Democratic | Dani Brzozowski | 119,313 | 35.28 | −5.60% |
| | Write-in | Write-in | 7 | 0.00 | N/A |
| Total votes | Total votes | Total votes | 338,159 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

## District 17

The 17th district encompasses northwestern Illinois, including the Quad cities metro, the westside of Rockford, and Peoria. Democratic incumbent Cheri Bustos was re-elected with 52.0% of the vote while the district voted for Donald Trump in the concurrently-held presidential election by 1.6%, making it one of only seven Trump-won districts held by a Democrat in the 117th Congress.

### Democratic primary
#### Candidates
##### Nominee

* Cheri Bustos, incumbent U.S. Representative

##### Eliminated in primary

* Spanky Edwards, chairman of the Youth Works Committee of the Illinois branch of the NAACP

#### Primary results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Cheri Bustos (incumbent) | 56,388 | 99.7 |
| | Democratic | Spanky Edwards (write-in) | 189 | 0.3 |
| Total votes | Total votes | Total votes | 56,577 | 100.0 |

### Republican primary
#### Candidates
##### Nominee

* Esther Joy King, attorney and businesswoman

##### Eliminated in primary

* Bill Fawell, real estate broker and nominee for Illinois's 17th congressional district in 2018

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Esther Joy King | 19,464 | 65.1 |
| | Republican | Bill Fawell | 10,423 | 34.9 |
| Total votes | Total votes | Total votes | 29,887 | 100.0 |

### Endorsements

Organizations
* End Citizens United
* J Street PAC
* Planned Parenthood Action Fund
U.S. Executive Branch officials
* Donald Trump, President of the United States
Organizations
* Susan B. Anthony List

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Lean D | October 21, 2020 |
| Inside Elections | Safe D | October 16, 2020 |
| Sabato's Crystal Ball | Likely D | October 20, 2020 |
| Politico | Lean D | November 2, 2020 |
| Daily Kos | Likely D | October 26, 2020 |
| RCP | Likely D | October 28, 2020 |
| Niskanen | Safe D | June 7, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Cheri Bustos (D) | Esther Joy King (R) | Undecided |
| Tarrance Group (R) | October 10–12, 2020 | 418 (LV) | ± 4.9% | 49% | 44% | 7% |
| Public Opinion Strategies (R) | October 4–6, 2020 | 400 (LV) | ± 4.9% | 48% | 42% | 8% |

#### Results

Illinois's 17th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Cheri Bustos (incumbent) | 156,011 | 52.02 | −10.07% |
| | Republican | Esther Joy King | 143,863 | 47.97 | +10.06% |
| | Write-in | Write-in | 21 | 0.01 | N/A |
| Total votes | Total votes | Total votes | 299,895 | 100.0 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 18

The 18th district covers rural west-central Illinois, including Jacksonville, Quincy, and parts of Bloomington, Peoria, and Springfield. The incumbent was Republican Darin LaHood, who was re-elected with 67.2% of the vote in 2018.

### Republican primary
#### Candidates
##### Nominee

* Darin LaHood, incumbent U.S. representative

#### Primary results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Darin LaHood (incumbent) | 59,542 | 100.0 |
| Total votes | Total votes | Total votes | 59,542 | 100.0 |

### Democratic primary

After the primaries ended, Democratic Party leaders in the district placed George Petrilli, an attorney, on the ballot.

#### Withdrawn

* Mark Haasis, former national organizer for United Automobile Workers

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | October 21, 2020 |
| Inside Elections | Safe R | October 16, 2020 |
| Sabato's Crystal Ball | Safe R | October 20, 2020 |
| Politico | Safe R | October 11, 2020 |
| Daily Kos | Safe R | October 26, 2020 |
| RCP | Safe R | October 28, 2020 |
| Niskanen | Safe R | June 7, 2020 |

#### Results

Illinois's 18th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Darin LaHood (incumbent) | 261,840 | 70.41 | +3.18% |
| | Democratic | George Petrilli | 110,039 | 29.59 | −3.18% |
| Total votes | Total votes | Total votes | 371,879 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |