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Illinois' 18th Congressional District elections, 2012
November 6, 2012
March 20, 2012
|Candidate Filing Deadline||Primary Election||General Election|
Primary: Illinois has a mixed-hybrid primary system. Voters can change parties each year but must declare a party affiliation at the polls. Depending on which party is chosen, the voter will then be counted as registered for that party. Voters may change party affiliation at polls or caucus.
Voter registration: Voters had to register to vote in the primary by February 21. For the general election, the voter registration deadline was October 9. A "grace period" was also available, allowing voter registration until three days before an election.
- See also: Illinois elections, 2012
Incumbent: Heading into the election the incumbent was Aaron Schock (R), who was first elected in 2008.
This was the first election using new district maps based on 2010 Census data. Illinois' 18th Congressional District covers central and western Illinois, including Hancock, McDonough, Adams, Pike, Brown, Schuyler, Scott, Cass, Mason, Menard, Sangamon, Logan, Tazewell, McLean, Woodford, Marshall, Stark and Peoria counties.
General election candidates
March 20, 2012, primary results
|U.S. House, Illinois District 18 General Election, 2012|
|Republican||Aaron Schock Incumbent||74.2%||244,467|
|Source: Illinois Board of Elections "2012 General Election Official Vote Totals"|
|U.S. House, Illinois District 18 Democratic Primary, 2012|
Impact of redistricting
- See also: Redistricting in Illinois
With the 2011 redistricting, Illinois lost 1 of its current 19 House seats because the state's population failed to grow as fast as in other states. Illinois has had 11 Republican congressmen and 8 Democrats since the November 2010 election. The new map, designed by the dominant Democrats, could have flipped that advantage to as many as 12 Democrats and only six Republicans.
- 4 percent from the 11th Congressional District
- 11 percent from the 15th Congressional District
- 15 percent from the 17th Congressional District
- 64 percent from the 18th Congressional District
- 5 percent from the 19th Congressional District
FairVote's Monopoly Politics 2012 study
- See also: FairVote's Monopoly Politics 2012
In 2012, FairVote did a study on partisanship in the congressional districts, giving each a percentage ranking (D/R) based on the new 2012 maps and comparing that to the old 2010 maps. Illinois' 18th District became more Republican because of redistricting.
- 2012: 41D / 59R
- 2010: 45D / 55R
Cook Political Report's PVI
In 2012, Cook Political Report released its updated figures on the Partisan Voter Index, which measures each congressional district's partisanship relative to the rest of the country. Illinois' 18th Congressional District has a PVI of R+10, which is the 110th most Republican district in the country. In 2008, this district was won by John McCain (R), 55-45 percent over Barack Obama (D). In 2004, George W. Bush won the district 63-37 percent over John Kerry (D).
|Candidate ballot access|
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|U.S. House, Illinois District 18 General Election, 2010|
|Republican||Aaron Schock Incumbent||69.1%||152,868|
|Democratic||Deirdre "D.K." Hirner||25.8%||57,046|
- United States House of Representatives elections in Illinois, 2012
- United States House of Representatives elections, 2012
- Campaign finance at OpenSecrets.org
- Politico, "2012 Election Map, Illinois"
- Illinois Board of Elections "2012 Election Calendar," Accessed July 21, 2012
- Illinois Board of Elections "Registering to Vote in Illinois," Accessed July 21, 2012
- Illinois Redistricting Map "Map" Accessed July 24, 2012
- Chicago Sun Times "Elections 2012: Illinois 2012 Primary Election Results" accessed March 20, 2012
- pjstar.com "Easton man will oppose Schock" accessed December 15, 2011
- Central Illinois Proud.com "27 Year Old Running For Congress" accessed December 15, 2011
- Illinois State Board of Elections "Candidate List" Accessed February 10, 2012
- Chicago Tribune "Odd geography in new Illinois congressional map:Millions of constituents will find their representative has changed" Accessed February 22, 2012
- Moonshadow Mobile's CensusViewer "Illinois' congressional districts 2001-2011 comparison"
- Labels & Lists "VoterMapping software voter counts"
- "2011 Redistricting and 2012 Elections in Illinois," September 2012
- Cook Political Report "Partisan Voting Index Districts of the 113th Congress: 2004 & 2008" Accessed October 2012
- U.S. Congress House Clerk "Statistics of the Congressional Election of November 2, 2010"