Illinois' 12th Congressional District elections, 2012

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Illinois' 12th Congressional District

General Election Date
November 6, 2012

Primary Date
March 20, 2012

November 6 Election Winner:
William Enyart Democratic Party
Incumbent prior to election:
Jerry F. Costello Democratic Party
Jerry F. Costello.jpg

Illinois U.S. House Elections
District 1District 2District 3District 4District 5District 6District 7District 8District 9District 10District 11District 12District 13District 14District 15District 16District 17District 18

2012 U.S. Senate Elections

Flag of Illinois.png
The 12th Congressional District of Illinois held an election for the U.S. House of Representatives on November 6, 2012.

Democrat William Enyart won the election.[1]

This is the 12th congressional district prior to the 2010 redistricting.
Candidate Filing Deadline Primary Election General Election
December 27, 2011
March 20, 2012
November 6, 2012

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" is also available, allowing voter registration until three days before an election.[2][3]

See also: Illinois elections, 2012

Incumbent: Heading into the election the incumbent was Jerry F. Costello (D), who was first elected in 1988. Costello will retire rather than run for re-election.[4]

This was the first election using new district maps based on 2010 Census data. Illinois' 12th Congressional District makes up the southern tip of the state. It includes the counties of Jefferson, Perry, Franklin, Williamson, Union, Alexander, Pulaski, Jackson, Randolph, Monroe, St. Claire, and part of Madison county.[5]


Note: Election results were added on election night as races were called. Vote totals were added after official election results had been certified. For more information about Ballotpedia's election coverage plan, click here. If you find any errors in this list, please email: Geoff Pallay.

General election candidates

Democratic Party William EnyartGreen check mark transparent.png
Republican Party Jason Plummer
Green Party Paula Bradshaw
Note: Brad Harriman withdrew from the race after the primary and was replaced by William Enyart.

March 20, 2012, primary results

Democratic Party Democratic Primary

Republican Party Republican Primary

Note:Teri Newman was removed from the official candidate list on February 2, 2012.[13]

Election Results

General Election

U.S. House, Illinois District 12 General Election, 2012
Party Candidate Vote % Votes
     Democratic Green check mark transparent.pngWilliam Enyart 51.7% 157,000
     Republican Jason Plummer 42.7% 129,902
     Green Paula Bradshaw 5.6% 17,045
Total Votes 303,947
Source: Illinois Board of Elections "2012 General Election Official Vote Totals"

Democratic Primary

U.S. House, Illinois' 12th Congressional District Democratic Primary Democratic Primary, 2012
Candidate Vote % Votes
Green check mark transparent.pngBrad Harriman 69.8% 27,409
Christopher Miller 22.6% 8,874
Kenneth Wiezer 7.6% 2,967
Total Votes 39,250

Republican Primary

U.S. House, Illinois' 12th Congressional District Republican Primary Republican Primary, 2012
Candidate Vote % Votes
Green check mark transparent.pngJason Plummer 55.7% 25,280
Rodger Cook 35.9% 16,313
Theresa Kormos 8.4% 3,811
Total Votes 45,404

Race background


Illinois' 12th was considered to be a Tossup according to the New York Times race ratings. Democrats were hoping to hold onto this seat after the retirement of incumbent Jerry Costello. With the withdrawal of their former top candidate, Brad Harriman, it was not easy.[14]

Illinois' 12th District had been included in the Democratic Congressional Campaign Committee's "Red to Blue List," which identifies districts that the organization had specifically targeted to flip from Republican to Democratic control.[15]

Republican challenger Jason Plummer had been included in the National Republican Congressional Committee's Young Guns program. The program highlighted challengers who represent the GOP's best chances to pick up congressional seats in the general election.[16]

Using the Federal Election Commission's October Quarterly campaign finance filings, the Brennan Center for Justice at The New York University School of Law published a report on October 22nd focusing on the 25 House races rated most competitive by The Cook Political Report, including the race for Illinois' 12th. The report examined the relative spending presence of non-candidate groups, candidates, and small donors in these races - "which will likely determine which party will control the House." [17]

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.[19] Illinois has had 11 Republican congressmen and 8 Democrats since the November 2010 election.[19] The new map, designed by the dominant Democrats, could flip that advantage to as many as 12 Democrats and only six Republicans.[19]

The new 12th district is composed of the following percentages of voters of the old congressional districts.[20][21]

District partisanship

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' 12th District became more Democratic because of redistricting.[22]

  • 2012: 52D / 48R
  • 2010: 51D / 49R

Cook Political Report's PVI

See also: Cook Political Report's Partisan Voter Index

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' 12th Congressional District has a PVI of D+2, which is the 174th most Democratic district in the country. In 2008, this district was won by Barack Obama (D), 56-44 percent over John McCain (R). In 2004, John Kerry (D) won the district 51-49 percent over George W. Bush (R).[23]

Campaign donors


Brad Harriman (2012)[24] Campaign Finance Reports
ReportDate FiledBeginning BalanceTotal Contributions
for Reporting Period
ExpendituresCash on Hand
Pre-Primary[25]March 8, 2012$159,596.00$56,980.00$(64,172.82)$152,403.18
April Quarterly[26]April 13, 2012$152,403.18$141,001.00$(94,475.97)$198,928.21
Running totals
Jason Plummer (2012)[27] Campaign Finance Reports
ReportDate FiledBeginning BalanceTotal Contributions
for Reporting Period
ExpendituresCash on Hand
Pre-Primary[28]March 8, 2012$126,332.56$37,365.00$(77,397.30)$86,300.26
April Quarterly[29]April 15, 2012$86,300.26$74,325.00$(104,764.35)$55,860.91
Running totals

District history


On November 2, 2010, Jerry F. Costello won re-election to the United States House of Representatives. He defeated Teri Newman (R) and Rodger Jennings (G) in the general election.[30]

U.S. House of Representatives, Illinois' 12th Congressional District, General Election, 2010
Party Candidate Vote % Votes
     Democratic Green check mark transparent.pngJerry F. Costello Incumbent 59.8% 121,272
     Republican Teri Newman 36.5% 74,046
     Green Rodger Jennings 3.6% 7,387
Total Votes 202,705

See also

External links


  1. Politico "2012 Election Map, Illinois"
  2. Illinois Board of Elections "2012 Election Calendar," Accessed July 21, 2012
  3. Illinois Board of Elections "Registering to Vote in Illinois," Accessed July 21, 2012
  4. "Rep. Jerry Costello won't seek re-election in 2012" Accessed December 5, 2011
  5. June 2011 Illinois Redistricting "Map" Accessed July 23, 2012
  6. 6.0 6.1 ABC News 7 "Election Results Primary 2012" accessed March 20, 2012
  7. Belleville News-Democrat "'It's a wide open race right now': Musical chairs continues for 12th Congressional District seat" accessed December 5, 2011
  8. The "Democrat to run for 12th District seat in Congress" accessed December 5, 2011
  9. Belleville News-Democrat ""Retired carpenter plans run for Costello's seat in Congress" accessed December 5, 2011
  10. Belleville News-Democrat "Roger Cook, former Belleville mayor, plans to run for Congress" accessed December 5, 2011
  11. Belleville News-Democrat ""O'Fallon nurse hopes to unseat U.S. Rep. Jerry Costello" accessed December 5, 2011
  12. St. Louis Post-Dispatch "Plummer, Callis jumping into fray for Costello's Illinois congressional seat" accessed December 5, 2011
  13. Illinois State Board of Elections "Candidate List" Accessed February 10, 2012
  14. New York Times "House Race Ratings," Accessed August 7, 2012
  15. DCCC, "Red to Blue 2012"
  16. NRCC "Young Guns 2012"
  17. Brennan Center for Justice, "Election Spending 2012: 25 Toss-Up House Races," October 22, 2012
  18. The Cook Political Report, "House: Race Ratings", updated October 18, 2012
  19. 19.0 19.1 19.2 Chicago Tribune "Odd geography in new Illinois congressional map:Millions of constituents will find their representative has changed" Accessed February 22, 2012
  20. Moonshadow Mobile's CensusViewer "Illinois' congressional districts 2001-2011 comparison"
  21. Labels & Lists "VoterMapping software voter counts"
  22. "2011 Redistricting and 2012 Elections in Illinois," September 2012
  23. Cook Political Report "Partisan Voting Index Districts of the 113th Congress: 2004 & 2008" Accessed October 2012
  24. FEC Reports "Brad Harriman Summary Reports" Accessed July 12, 2012
  25. FEC Reports "Pre-Primary" Accessed July 12, 2012
  26. FEC Reports "April Quarterly" Accessed July 12, 2012
  27. FEC Reports "Jason Plummer Summary Reports" Accessed July 12, 2012
  28. FEC Reports "Pre-Primary" Accessed July 12, 2012
  29. FEc Reports "April Quarterly" Accessed July 12, 2012
  30. U.S. Congress House Clerk "Statistics of the Congressional Election of November 2, 2010"