Illinois' 6th Congressional District

Illinois' 6th Congressional District

Incumbent

Sean Casten

Assumed office: January 3, 2019

Illinois' 6th Congressional District in the United States House of Representatives is represented by Sean Casten (D).

As of the 2020 Census, Illinois representatives represented an average of 754,279 residents. After the 2010 Census, each member represented 714,688 residents.

Elections

• 2030
• 2028
• 2026
• 2024
• 2022
• 2020
• 2018

See also: Illinois's 6th Congressional District election, 2030

There are no official candidates yet for this election.

See also: Illinois' 6th Congressional District election, 2028

There are no official candidates yet for this election.

See also: Illinois' 6th Congressional District election, 2026

General election

The primary will occur on March 17, 2026. The general election will occur on November 3, 2026. General election candidates will be added here following the primary.

Democratic primary

Democratic primary for U.S. House Illinois District 6

Incumbent Sean Casten (D) and Joseph Ruzevich (D) are running in the Democratic primary for U.S. House Illinois District 6 on March 17, 2026.

		Candidate
		Sean Casten
		Joseph Ruzevich

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	Incumbents are bolded and underlined.
= candidate completed the Ballotpedia Candidate Connection survey.
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Republican primary

Republican primary for U.S. House Illinois District 6

Niki Conforti (R) and Skylar Duensing (R) are running in the Republican primary for U.S. House Illinois District 6 on March 17, 2026.

		Candidate
		Niki Conforti
	Submit photo	Skylar Duensing

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	There are no incumbents in this race.
= candidate completed the Ballotpedia Candidate Connection survey.
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See also: Illinois' 6th Congressional District election, 2024

General election

General election for U.S. House Illinois District 6

Incumbent Sean Casten (D) defeated Niki Conforti (R) and Peter Meyer Jr. (Independent) in the general election for U.S. House Illinois District 6 on November 5, 2024.

		Candidate	%	Votes
✔		Sean Casten (D)	54.2	196,647
		Niki Conforti (R)	45.8	166,116
	Submit photo	Peter Meyer Jr. (Independent) (Write-in)	0.0	86

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 362,849
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Democratic primary

Democratic primary for U.S. House Illinois District 6

Incumbent Sean Casten (D) defeated Mahnoor Ahmad (D) and Charles Hughes (D) in the Democratic primary for U.S. House Illinois District 6 on March 19, 2024.

		Candidate	%	Votes
✔		Sean Casten	77.1	56,750
		Mahnoor Ahmad	14.2	10,483
		Charles Hughes	8.6	6,366

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 73,599
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Republican primary

Republican primary for U.S. House Illinois District 6

Niki Conforti (R) advanced from the Republican primary for U.S. House Illinois District 6 on March 19, 2024.

		Candidate	%	Votes
✔		Niki Conforti	100.0	30,543

---

	There were no incumbents in this race. The results have been certified. Source	Total votes: 30,543
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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See also: Illinois' 6th Congressional District election, 2022

General election

General election for U.S. House Illinois District 6

Incumbent Sean Casten (D) defeated Keith Pekau (R) and Arthur Jones (Independent) in the general election for U.S. House Illinois District 6 on November 8, 2022.

		Candidate	%	Votes
✔		Sean Casten (D)	54.4	150,496
		Keith Pekau (R)	45.6	126,351
		Arthur Jones (Independent) (Write-in)	0.0	12

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 276,859
= candidate completed the Ballotpedia Candidate Connection survey.
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Democratic primary

Democratic primary for U.S. House Illinois District 6

Incumbent Sean Casten (D) defeated incumbent Marie Newman (D) and Charles Hughes (D) in the Democratic primary for U.S. House Illinois District 6 on June 28, 2022.

		Candidate	%	Votes
✔		Sean Casten	67.7	45,654
		Marie Newman	29.2	19,726
		Charles Hughes	3.1	2,085

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 67,465
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Republican primary

Republican primary for U.S. House Illinois District 6

The following candidates ran in the Republican primary for U.S. House Illinois District 6 on June 28, 2022.

		Candidate	%	Votes
✔		Keith Pekau	38.7	20,178
		Gary Grasso	27.2	14,150
		Niki Conforti	11.4	5,947
		Catherine A. O'Shea	10.1	5,243
		Scott Kaspar	6.9	3,573
		Rob Cruz	5.8	3,003

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	There were no incumbents in this race. The results have been certified. Source	Total votes: 52,094
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Withdrawn or disqualified candidates

• John Ostman (R)

See also: Illinois' 6th Congressional District election, 2020

General election

General election for U.S. House Illinois District 6

Incumbent Sean Casten (D) defeated Jeanne M. Ives (R) and Bill Redpath (L) in the general election for U.S. House Illinois District 6 on November 3, 2020.

		Candidate	%	Votes
✔		Sean Casten (D)	52.8	213,777
		Jeanne M. Ives (R)	45.4	183,891
		Bill Redpath (L)	1.7	7,079

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 404,747
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Democratic primary

Democratic primary for U.S. House Illinois District 6

Incumbent Sean Casten (D) advanced from the Democratic primary for U.S. House Illinois District 6 on March 17, 2020.

		Candidate	%	Votes
✔		Sean Casten	100.0	82,909

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 82,909
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Withdrawn or disqualified candidates

• Robert Marshall (D)

Republican primary

Republican primary for U.S. House Illinois District 6

Jeanne M. Ives (R) defeated Gordon Kinzler (R) and Richard Mayers (R) in the Republican primary for U.S. House Illinois District 6 on March 17, 2020.

		Candidate	%	Votes
✔		Jeanne M. Ives	70.8	29,144
		Gordon Kinzler	29.2	12,017
	Submit photo	Richard Mayers (Write-in)	0.0	1

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	There were no incumbents in this race. The results have been certified. Source	Total votes: 41,162
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Withdrawn or disqualified candidates

• Evelyn Sanguinetti (R)

See also: Illinois' 6th Congressional District election, 2018

General election

General election for U.S. House Illinois District 6

Sean Casten (D) defeated incumbent Peter J. Roskam (R) in the general election for U.S. House Illinois District 6 on November 6, 2018.

		Candidate	%	Votes
✔		Sean Casten (D)	53.6	169,001
		Peter J. Roskam (R)	46.4	146,445

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 315,446 (100% precincts reporting)
= candidate completed the Ballotpedia Candidate Connection survey.
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Democratic primary

Democratic primary for U.S. House Illinois District 6

The following candidates ran in the Democratic primary for U.S. House Illinois District 6 on March 20, 2018.

		Candidate	%	Votes
✔		Sean Casten	29.5	19,774
		Kelly Mazeski	26.8	17,984
		Carole Cheney	17.4	11,663
		Amanda Howland	12.7	8,483
		Becky Anderson Wilkins	6.0	4,001
		Jennifer Zordani	4.1	2,743
		Ryan Huffman	3.5	2,365

---

	There were no incumbents in this race. The results have been certified.	Total votes: 67,013
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Republican primary

Republican primary for U.S. House Illinois District 6

Incumbent Peter J. Roskam (R) advanced from the Republican primary for U.S. House Illinois District 6 on March 20, 2018.

		Candidate	%	Votes
✔		Peter J. Roskam	100.0	56,544

---

	Incumbents are bolded and underlined. The results have been certified.	Total votes: 56,544
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
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Previous election results

2016

See also: Illinois' 6th Congressional District election, 2016

Heading into the election, Ballotpedia rated this race as safely Republican. Incumbent Peter Roskam (R) defeated Amanda Howland (D) in the general election on November 8, 2016. Roskam defeated Gordon Kinzler in the Republican primary on March 15, 2016, while Howland defeated Robert Marshall to win the Democratic nomination.

U.S. House, Illinois District 6 General Election, 2016

Party		Candidate	Vote %	Votes
	Republican	Peter Roskam Incumbent	59.2%	208,555
	Democratic	Amanda Howland	40.8%	143,591
Total Votes				352,146
Source: Illinois State Board of Elections

U.S. House, Illinois District 6 Democratic Primary, 2016

Candidate	Vote %	Votes
Amanda Howland	67.1%	51,101
Robert Marshall	32.9%	25,027
Total Votes		76,128
Source: Illinois State Board of Elections

U.S. House, Illinois District 6 Republican Primary, 2016

Candidate	Vote %	Votes
Peter Roskam Incumbent	68.8%	83,344
Gordon Kinzler	31.2%	37,834
Total Votes		121,178
Source: Illinois State Board of Elections

2014

See also: Illinois' 6th Congressional District elections, 2014

The 6th Congressional District of Illinois held an election for the U.S. House of Representatives on November 4, 2014. Incumbent Peter Roskam (R) defeated challenger Michael Mason (D) in the general election.

U.S. House, Illinois District 6 General Election, 2014

Party		Candidate	Vote %	Votes
	Republican	Peter Roskam Incumbent	67.1%	160,278
	Democratic	Michael Mason	32.9%	78,465
Total Votes				238,743
Source: Illinois State Board of Elections Official Results

General election candidates

• Peter Roskam - Incumbent
• Michael Mason

March 18, 2014, primary results

Republican Primary

• Peter Roskam - Incumbenta

Democratic Primary

• Michael Masona

2012

See also: Illinois' 6th Congressional District elections, 2012

The 6th Congressional District of Illinois held an election for the U.S. House of Representatives on November 6, 2012. Incumbent Peter Roskam was re-elected in the district.

U.S. House, Illinois District 6 General Election, 2012

Party		Candidate	Vote %	Votes
	Republican	Peter Roskam Incumbent	59.2%	193,138
	Democratic	Leslie Coolidge	40.8%	132,991
Total Votes				326,129
Source: Illinois Board of Elections "2012 General Election Official Vote Totals"

2010
On November 2, 2010, Peter Roskam won re-election to the United States House. He defeated Benjamin S. Lowe (D) in the general election.

U.S. House, Illinois District 6 General Election, 2010
Party		Candidate	Vote %	Votes
	Republican	Peter Roskam incumbent	63.6%	114,456
	Democratic	Benjamin S. Lowe	36.4%	65,379
Total Votes				179,835

2008
On November 4, 2008, Peter Roskam won re-election to the United States House. He defeated Jill Morgenthaler (D) in the general election.

U.S. House, Illinois District 6 General Election, 2008
Party		Candidate	Vote %	Votes
	Republican	Peter Roskam incumbent	57.6%	147,906
	Democratic	Jill Morgenthaler	42.4%	109,007
Total Votes				256,913

2006
On November 7, 2006, Peter Roskam won election to the United States House. He defeated Tammy Duckworth (D) in the general election.

U.S. House, Illinois District 6 General Election, 2006
Party		Candidate	Vote %	Votes
	Republican	Peter Roskam	51.4%	91,382
	Democratic	Tammy Duckworth	48.6%	86,572
	N/A	Write-in	0%	3
Total Votes				177,957

2004
On November 2, 2004, Henry J. Hyde won re-election to the United States House. He defeated Christine Cegelis (D) in the general election.

U.S. House, Illinois District 6 General Election, 2004
Party		Candidate	Vote %	Votes
	Republican	Henry J. Hyde incumbent	55.8%	139,627
	Democratic	Christine Ceglis	44.2%	110,470
Total Votes				250,097

2002
On November 5, 2002, Henry J. Hyde won re-election to the United States House. He defeated Tom Berry (D) in the general election.

U.S. House, Illinois District 6 General Election, 2002
Party		Candidate	Vote %	Votes
	Republican	Henry J. Hyde incumbent	65.1%	113,174
	Democratic	Tom Berry	34.9%	60,698
Total Votes				173,872

2000
On November 7, 2000, Henry J. Hyde won re-election to the United States House. He defeated Brent Christensen (D) in the general election.

U.S. House, Illinois District 6 General Election, 2000
Party		Candidate	Vote %	Votes
	Republican	Henry J. Hyde incumbent	58.9%	133,327
	Democratic	Brent Christensen	41.1%	92,880
Total Votes				226,207

District map

Redistricting

2020-2021

See also: Redistricting in Illinois after the 2020 census

Illinois enacted a congressional map on November 24, 2021, after Gov. J.B. Pritzker (D) signed the proposal into law. The Illinois State Senate voted 41-18 in favor of the map on October 28, 2021, followed by the Illinois House of Representatives voting 71-43 in favor on October 29, 2021.

How does redistricting in Illinois work? The Illinois General Assembly is responsible for drawing both congressional and state legislative district lines. Both chambers of the state legislature must approve a redistricting plan. The governor may veto the lines drawn by the state legislature.

In the event that both chambers of the state legislature do not approve a legislative redistricting plan, a backup commission must draw the lines. The majority and minority leaders of each chamber must appoint two members each to the commission (one legislator and one general citizen). Of the eight commission members, no more than four may belong to the same political party. In the event that these eight members cannot approve a plan, the Illinois Supreme Court must select two individuals (from different political parties) as potential tiebreakers. The secretary of state must then appoint one of these individuals to the backup commission to break the tie.

The Illinois Constitution requires that state legislative districts be "contiguous and reasonably compact." There are no such requirements in place for the state's congressional districts.

State law also mandates the establishment of state legislative districts "that allow racial or language minority communities to elect--or influence the election of--the candidates of their choice, even if no comparable district would be required by the federal Voting Rights Act."

2020

2024

2010-2011

This is the 6th Congressional District of Illinois after the 2001 redistricting process.

See also: Redistricting in Illinois after the 2010 census

In 2011, the Illinois State Legislature re-drew the congressional districts based on updated population information from the 2010 census.

District analysis

See also: The Cook Political Report's Partisan Voter Index

See also: FiveThirtyEight's elasticity scores

2026

Heading into the 2026 elections, based on results from the 2024 and 2020 presidential elections, the Cook Partisan Voter Index for this district is D+3. This meant that in those two presidential elections, this district's results were 3 percentage points more Democratic than the national average. This made Illinois' 6th the 178th most Democratic district nationally.

2024

Heading into the 2024 elections, based on results from the 2020 and 2016 presidential elections, the Cook Partisan Voter Index for this district was D+3. This meant that in those two presidential elections, this district's results were 3 percentage points more Democratic than the national average. This made Illinois' 6th the 182nd most Democratic district nationally.

Daily Kos calculated what the results of the 2020 presidential election in this district would have been following redistricting. Joe Biden (D) would have defeated Donald Trump (R) 54.5%-43.6%.

2022

Heading into the 2022 elections, based on results from the 2020 and 2016 presidential elections, the Cook Partisan Voter Index for this district was D+3. This meant that in those two presidential elections, this district's results were 3 percentage points more Democratic than the national average. This made Illinois' 6th the 182nd most Democratic district nationally.

Daily Kos calculated what the results of the 2020 presidential election in this district would have been following redistricting. Joe Biden (D) would have received 54.5% of the vote in this district and Donald Trump (R) would have received 43.6%.

2018

Heading into the 2018 elections, based on results from the 2016 and 2012 presidential elections, the Cook Partisan Voter Index for this district was R+2. This meant that in those two presidential elections, this district's results were 2 percentage points more Republican than the national average. This made Illinois' 6th Congressional District the 222nd most Republican nationally.

FiveThirtyEight's September 2018 elasticity score for states and congressional districts measured "how sensitive it is to changes in the national political environment." This district's elasticity score was 1.02. This means that for every 1 point the national political mood moved toward a party, the district was expected to move 1.02 points toward that party.

See also

• Redistricting in Illinois
• Illinois' 6th Congressional District election, 2024
• Illinois' 6th Congressional District election, 2022
• Illinois' 6th Congressional District election, 2020
• Illinois' 6th Congressional District election, 2018

External links

• GovTrack District 6

Footnotes

[show]

Illinois' current delegation to the United States Congress

Senators

Tammy Duckworth (D)

Dick Durbin (D)

Representatives

District 1

Jonathan Jackson (D)

District 2

Robin Kelly (D)

District 3

Delia Ramirez (D)

District 4

Jesus Garcia (D)

District 5

Mike Quigley (D)

District 6

Sean Casten (D)

District 7

Danny Davis (D)

District 8

Raja Krishnamoorthi (D)

District 9

Jan Schakowsky (D)

District 10

Brad Schneider (D)

District 11

Bill Foster (D)

District 12

Mike Bost (R)

District 13

Nikki Budzinski (D)

District 14

Lauren Underwood (D)

District 15

Mary Miller (R)

District 16

Darin LaHood (R)

District 17

Eric Sorensen (D)

Democratic Party (16)

Republican Party (3)