The 2010 Illinois gubernatorial election took place on November 2, 2010. Incumbent Democratic Governor Pat Quinn was elected to a full term in office, having become governor in 2009 following the impeachment and removal of Governor Rod Blagojevich. Quinn was elected as the Democratic nominee, the Illinois Green Party nominee was attorney and 2006 nominee Rich Whitney, the Republican nominee was State Senator Bill Brady, the Libertarian Party nominee was Lex Green, and Scott Lee Cohen ran as an independent. Quinn was elected to a full term in a very close race, defeating Brady by only about 32,000 votes with Brady carrying 98 of the state's 102 counties. Prior to the general election, the primary election in February 2010 featured extremely close races between candidates for the two largest parties' nominations. Quinn warded off a challenge by Comptroller Dan Hynes by a margin of about 8,300 votes, while Brady won the Republican nomination on the strength of fewer than 200 votes in a fractured seven-way race. This was the first time Gallatin County went Republican for the governor level since 1920. The election marked the first time since 1852 that the Democrats won three consecutive gubernatorial elections in Illinois. This is also the first gubernatorial election since 1990 in which the winner was of the same party as the incumbent president.

Background

The primaries and general elections coincided with those for federal elections (Senate and House), as well as those for other state offices. The election was part of the 2010 Illinois elections. For the primaries, turnout for the gubernatorial primaries was 22.21%, with 1,688,297 votes cast and turnout for the lieutenant gubernatorial primaries was 20.10% with 1,527,782 votes cast. For the general election, turnout was 49.69%, with 3,729,989 votes cast.

Democratic primaries

Quinn defeated Hynes by just under 9,000 votes, while Cohen won an upset over establishment candidates by just over 3% campaigning as a political outsider.

Governor

Candidates

Debates

Democratic candidates Quinn and Hynes debated on January 19. WSIU Public Broadcasting (WSIU (FM)/WSIU-TV) at Southern Illinois University and Illinois Public Media (WILL AM/FM/TV) at the University of Illinois at Urbana-Champaign also co-sponsored two gubernatorial primary election debates. Pat Quinn and Dan Hynes debated on January 21, 2010.

Polling

Results

Lieutenant governor

Candidates

Results

[[File:Illinois 2010 Lt. Governor Democratic Primary county map.svg|thumb|150px|Primary results by county: Cohen {{legend|#4872f1|Cohen—41-50%}} {{legend|#00ffff|Cohen—31-40%}} {{legend|#a1ffff|Cohen—21-30%}} Turner {{legend|#bfff92|Turner—21-30%}} Boland {{legend|#ddde1f|Boland—61-70%}} {{legend|#ffff00|Boland—51-60%}} {{legend|#f2f26c|Boland—41-50%}} {{legend|#f2f2a0|Boland—31-40%}} {{legend|#f8f890|Boland—21-30%}} Castillo {{legend|#f29b8a|Castillo—31-40%}} {{legend|#f8dbd5|Castillo—21-30%}} Link {{legend|#c76a0f|Link-41-50%}} {{legend|#e97c11|Link-31-40%}} {{legend|#eeb074|Link-21-30%}} Tie {{legend|#cd42ca|Tie between Cohen and Boland-27%}} ]]

Aftermath

Scott Lee Cohen was replaced as the Democratic lieutenant gubernatorial nominee by former Carbondale City Councilwoman Sheila Simon after he withdrew due to allegations of abuse toward his wife and other charges.

Republican primaries

As on the Democratic side, both the gubernatorial and lieutenant gubernatorial primaries were extremely close, though moreso. Brady defeated Dillard by 0.02%, while Plummer defeated Murphy by just 0.65%.

Governor

Candidates

Declared

Withdrew

Results

Lieutenant governor

Candidates

Withdrawn

Results

[[File:2010 Illinois lieutenant gubernatorial Republican primary results map by county.svg|thumb| {{legend|#e27f7f|Plummer}} {{legend|#ffe0ea|20–30%}} {{legend|#ffc8cd|30–40%}} {{legend|#ffb2b2|40–50%}} {{legend|#e27f7f|50–60%}} {{legend|#d75d5d|60–70%}} {{legend|#f9d440|Murphy}} {{legend|#ffeeaa|30–40%}} {{legend|#ffe680|40–50%}} {{legend|#f9d440|50-60%}} {{legend|#5bc75b|Tracy}} {{legend|#c0f0c0|20–30%}} {{legend|#aae5aa|30–40%}} {{legend|#87de87|40–50%}} {{legend|#5bc75b|50–60%}} {{legend|#41b742|60–70%}} {{legend|#217821|80–90%}} {{legend|#ff7644|Cole}} {{legend|#ffac8e|30–40%}} {{legend|#ff8e65|40–50%}} {{legend|#ff7644|50–60%}} {{legend|#ff80e5|White}} {{legend|#FFBDF2|30-40%}} ]]

Green primaries

Governor

Candidates

Results

Lieutenant governor

Candidates

Results

General election

Candidates

Campaign

After the February 2 Democratic primary in which incumbent Governor Pat Quinn was nominated, attention was drawn to Scott Lee Cohen, the Democratic nominee for lieutenant governor. Illinois law required that candidates for governor and lieutenant governor run in separate primary elections, but run as a ticket in the November general election. Cohen was criticized for his having been charged with domestic battery, in which he was accused of holding a knife to the throat of an ex-girlfriend who was also a convicted prostitute. Cohen was also accused by his ex-wife of physical abuse and using illegally obtained anabolic steroids. Quinn and Dick Durbin, Illinois's senior U.S. Senator, both said that Cohen should withdraw his candidacy, which he did on February 7. Cohen ran as an independent candidate for the office of governor against Quinn. On March 27, 2010, the Democratic State Central Committee chose a replacement candidate, Sheila Simon. Dan Hynes, who placed second in the gubernatorial primary, denied interest in replacing Cohen on the ticket. Other names suggested included State Representative Art Turner, who placed second to Cohen in the Democratic primary and then finished second to Simon in committee balloting on March 27, 2010; State Senators Rickey Hendon and Terry Link, State Representative Mike Boland, and electrician Thomas Castillo, all of whom also ran in the primary; U.S. Department of Veterans Affairs official Tammy Duckworth; and State Representative Julie Hamos were suggested as possible replacements. Jeff Melvin, a 21-year retired army veteran, also applied to the open nominating call for the Democratic lieutenant governor position. At one point during the campaign, Quinn, struggling to make up ground amidst poor polling numbers against Brady, accused his Republican opponent of supporting a bill to kill puppies. In fact, the bill regulated shelters' practices when they euthanize animals. Quinn struggled to shake off Blagojevich's scandals, leading to poor approval ratings throughout the campaign, despite Quinn denouncing Blagojevich. Quinn trailed Brady by more than 10 points at times, despite Illinois being a deeply Democratic state. A central issue in the campaign was the state income tax. Quinn advocated for a one percentage point – or 33 percent – increase in the state's income tax to primarily fund education, while Brady called for a 10 percent across the board cut in state government and placing the State Board of Education under the governor's control.

Predictions

Polling

Results

Even though Brady won 98 out of the 102 counties, Quinn narrowly prevailed. Brady won almost everywhere in the state, including all of the collar counties of the Chicago suburbs. Quinn initially had a large lead when results first began to come in, as heavily populated areas tend to report their votes faster. However, once the more suburban and rural areas came in Brady narrowed the gap significantly. Quinn's huge win in Cook County proved too much for Brady to overcome, however. Brady conceded defeat later the following day on November 3, when it became clear he would lose. Quinn's win was ranked by Politico as the 7th biggest upset of the 2010 elections.

Counties that flipped from Democratic to Republican

Counties that flipped from Republican to Democratic