IL-09 elected a Democrat in 2018.

D+47.0 on 290,351 certified votes. Below: the 2018 result and this district's margin across every cycle on record.

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IL-09 — 2018 result

Source: MIT Election Data + Science Lab, US House returns (party-classified by literal ballot party).

Democratic (D)

213,368

73.5%

Republican (R)

76,983

26.5%

All others

0

0.0%

Margin

D+47.0

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Margin history

IL-09 across every cycle on record. Each year links to its district page.

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Year	Won	Margin	Votes
2024	D	+36.8%	338,828
2022	D	+43.4%	250,530
2020	D	+42.0%	369,170
2018	D	+47.0%	290,351
2016	D	+33.0%	326,948
2014	D	+32.1%	213,450
2012	D	+32.7%	293,807
2010	D	+35.2%	177,207
2008	D	+52.7%	243,694
2006	D	+49.2%	164,713
2004	D	+51.5%	231,417
2002	D	+43.4%	168,836
2000	D	+52.9%	192,346
1998	D	+51.5%	144,610
1996	D	+26.8%	196,082
1994	D	+32.2%	142,823
1992	D	+41.0%	239,703
1990	D	+42.4%	135,588
1988	D	+33.1%	205,187
1986	D	+43.3%	129,453
1984	D	+35.1%	214,495
1982	D	+34.5%	171,529
1980	D	+46.2%	145,788
1978	D	+50.7%	116,217
1976	D	+44.3%	168,983