# Illinois's 15th congressional district

The 15th congressional district of Illinois is currently located in central Illinois. It was located in eastern and southeastern Illinois until 2022. It is currently represented by Republican Mary Miller.
With a Cook Partisan Voting Index rating of R+22, it is one of the most Republican-leaning districts in Illinois. In most of the district, there are no elected Democrats above the county level, and Donald Trump carried over 65% of the district's vote in all of his bids for president.

## History
### 2011 redistricting

The congressional district covers parts of Bond, Champaign, Ford and Madison counties, and all of Clark, Clay, Clinton, Coles, Crawford, Cumberland, Douglas, Edgar, Edwards, Effingham, Fayette, Gallatin, Hamilton, Hardin, Jasper, Johnson, Lawrence, Madison, Marion, Massac, Moultrie, Pope, Richland, Saline, Shelby, Vermilion, Wabash, Washington, Wayne, and White counties. All or parts of Centralia, Charleston, Danville, Edwardsville, Effingham, Glen Carbon, Mattoon, and Rantoul are included. The representatives for these districts were elected in the 2012 primary and general elections, and the boundaries became effective on January 5, 2013.

## Composition

Composition :
| # | County | Seat | Population |
| 1 | Adams | Quincy | 64,441 |
| 5 | Bond | Greenville | 16,450 |
| 9 | Brown | Mount Sterling | 6,294 |
| 13 | Calhoun | Hardin | 4,317 |
| 17 | Cass | Virginia | 12,596 |
| 19 | Champaign | Urbana | 205,644 |
| 21 | Christian | Taylorville | 33,228 |
| 29 | Coles | Charleston | 46,060 |
| 39 | DeWitt | Clinton | 15,365 |
| 41 | Douglas | Tuscola | 19,629 |
| 45 | Edgar | Paris | 16,334 |
| 51 | Fayette | Vandalia | 21,164 |
| 57 | Fulton | Lewistown | 32,541 |
| 59 | Greene | Carrollton | 11,543 |
| 67 | Hancock | Carthage | 17,186 |
| 71 | Henderson | Oquawka | 6,088 |
| 83 | Jersey | Jerseyville | 21,091 |
| 107 | Logan | Lincoln | 27,590 |
| 109 | McDonough | Macomb | 26,839 |
| 115 | Macon | Decatur | 100,591 |
| 119 | Madison | Edwardsville | 262,752 |
| 125 | Mason | Havana | 12,523 |
| 131 | Mercer | Aledo | 15,487 |
| 129 | Menard | Petersburg | 11,954 |
| 135 | Montgomery | Hillsboro | 27,663 |
| 137 | Morgan | Jacksonville | 32,140 |
| 139 | Moultrie | Sullivan | 14,342 |
| 147 | Piatt | Monticello | 16,714 |
| 149 | Pike | Pittsfield | 14,342 |
| 167 | Sangamon | Springfield | 193,491 |
| 169 | Schuyler | Rushville | 6,733 |
| 171 | Scott | Winchester | 4,710 |
| 173 | Shelby | Shelbyville | 20,568 |
| 183 | Vermillion | Danville | 71,652 |
| 187 | Warren | Monmouth | 16,185 |

### Cities and CDPs with 10,000 or more people

* Springfield – 114,394
* Decatur – 69,097
* Quincy – 39,463
* Edwardsville – 26,808
* Alton – 25,676
* Collinsville – 24,366
* Godfrey – 17,825
* Jacksonville – 17,616
* Charleston – 17,286
* Mattoon – 16,870
* Macomb – 15,051
* Glen Carbon – 13,842
* Lincoln – 13,288
* Troy – 10,960
* Taylorville – 10,506

### 2,500 to 10,000 people

* Highland – 9,991
* Mahomet – 9,434
* Jerseyville – 8,337
* Paris – 8,291
* Maryville – 8,221
* Vandalia – 7,458
* Greenville – 7,083
* Clinton – 7,004
* Litchfield – 6,605
* Mount Zion – 6,019
* Beardstown – 5,951
* Monticello – 5,941
* Hillsboro – 5,902
* Pana – 5,199
* Shelbyville – 4,674
* Sherman – 4,673
* Tuscola – 4,636
* Sullivan – 4,413
* Pittsfield – 4,206
* St. Joseph – 3,810
* Aledo – 3,633
* Tolono – 3,604
* Riverton – 3,532
* South Jacksonville – 3,302
* Georgetown – 3,143
* Rushville – 3,005
* Havana – 2,963
* Arcola – 2,927
* Holiday Shores – 2,840
* Hamilton – 2,753
* Bushnell – 2,718
As of the 2020 redistricting, the district shifted from covering southeastern Illinois to encompassing the majority of Central Illinois. The district takes in Calhoun, Jersey, Greene, Pike, Scott, Morgan, Cass, Brown, Adams, Schuyler, Menard, Mason, Hancock, Henderson, Logan, DeWitt, Edgar, Douglas, Moultrie, Shelby, Christian, Montgomery, Fayette, and Bond Counties; most of Madison, Macon, McDonough, Champaign, and Warren Counties; half of Sangamon, Piatt, and Coles Counties; and part of Vermillion County.
Madison County is split between this district and the 13th district. They are partitioned on the western side by Summer St, Belleview Ave, State St, Bluff St, W 9th St, Illinois Highway 111, US Highway 67, Humbert Rd, Northwest Dr, Seminary Rd, Harris Ln, Wood Station Rd, Torch Club Rd, and Seller Rd, West Fork Wood River. They are partitioned on the eastern side by West County Line Rd, Main St, County Line Rd, Voorhees Ln, Cahokia Creek, Old Carpenter Rd, Illinois Highway 143, McCoy Dr, Alexander Dr, Dunlap Lake, Old Troy Rd, Illinois State Rte 159, Vandalia St, Union Ave, Portland St, Lebanon Rd, E Main St, and Illinois Highway 159. The 15th district takes in the communities of Highland, Troy, Hamel, Holiday Shores, Prairietown, Williamson, Livingston, Worden, Alhambra, Marine, St. Jacob, New Douglas; most of Godfrey; and part of Collinsville, Alton, Maryville, Glen Carbon, and Edwardsville.
Macon County is split between this district and the 13th district. They are partitioned on the northern side by Wise Rd. They are partitioned on the southern side by Sangamon River, Lincoln Memorial Parkway, Pebble Springs Rd, River Dr, W Hill Rd, S Twin Lakes Rd, US Highway 36, Illinois Highway 72, Bloomington Rd, W Mound Rd, Greenridge Dr, Illinois Highway 121, W Pershing Rd, Summit Ave, W Ravina Park Rd, Home Park Rd, N Westlawn Ave, W Marietta St, N Taylor Ave, N Fairview Ave, W Lincoln Park Dr, Illinois Highway 105, S Maffit St, E Riverside Ave, S Jasper St, E Lake Shore Dr, Lake Decatur, Norfolk Southern Railroad, Norfolk Ave, N 70th St, and William St Rd/Norfolk Rd. The 15th district takes in the municipalities of Macon, Maroa, Mount Zion, Long Creek, Argenta, Boody, Blue Mound, Elwin, and Macon; part of Harristown; and the southern and western outer portions of Decatur.
Champaign County is split between this district, the 2nd district, and the 13th district. The 15th and 2nd districts are partitioned by County Road 3000 N, County Road 1200 E, County Road 2800 N, County Road 1500 E, Liberty Ave, E Chandler St, County Road 1800 E, and County Road 2800 N, and County Road 2000 E. The 15th and 13th districts are partitioned by County Road 300 E, County Road 600 N, County Road 600 E, County Road 900 N, County Road 1200 E, W Old Church Rd, Deers Rd, County Road 1800 E, Airport Rd, US Highway 45, E Olympian Rd, N Willow Rd, E Ford Harris Rd, County Road 2000 N, N Duncan Rd, W Bloomington Rd, N Staley Rd, W Cardinal Rd, and County Road 1800 N. The 15th district takes in the communities of Mahomet, St. Joseph, Tolono, Thomasboro, Homer, Lake of the Woods, Gifford, Penfield, Royal, Ogden, Philo, Sidney, Sadorus, Pesotum, Longview, Allerton (shared with Vermillion County), and Broadlands; and part of Fisher.
Warren County is split between this district and the 17th district. They are partitioned by 60th St and 180th Ave. The 15th district takes in the communities of Little York, Kirkwood, Roseville, and Cameron.
Sangamon County is split between this district and the 13th district. They are partitioned by Lead Line Rd, Mansion Rd, N Main St, US Highway 72, Cockrell Ln, Hollis Dr, S Koke Mill Rd, Sangamon Valley Trail, Tozer Rd, Central Point Rd, Illinois Highway 29, North 1st St, East Sangamon Ave, US Highway I-55, South Grand Ave East, East Cook Rd, East Walnut Rd, Clear Lake Rd, Pfeiffer Rd, Barclay Rd, W Thompson Rd, and N Carpenter Rd. The 15th district takes in the communities of New Berlin, Sherman, Williamsville, Riverton, Loami, Berlin, Curran, Pleasant Plains, Cantrall, Sherman, Spaulding, and Clear Lake; and part of Springfield.
Piatt County is split between this district and the 13th district. They are partitioned on the northern side by E County Road 1800 N. They are partitioned on the southern side by E County Road 400 N and E County Road 600 N. The 15th district takes in the communities of Mansfield, De Land, La Place, Hammond, Atwood (shared with Douglas County), White Heath, and part of Monticello
Fulton County is split between this district and the 17th district. They are partitioned by East Oscar Linn Highway. The 15th district takes in the communities of Astoria, Lewistown, Table Grove, Vermont, Ipava, and Liverpool.
McDonough County is split between this district and the 17th district. They are partitioned by US Highway 136, US Highway 67, N 1150th Rd, Grant St, Deer Rd, N 1200th St, S Quail Walk Rd, Jamestown Rd, Arlington Rd, La Moine River, Emory Rd, N 1400th Rd, Krohe Dr, E 1200th St, N 1800th Rd, and E 1900th St, N 1700th St, E 2000th St. The 15th district takes in the communities of Colchester, Bushnell, Prairie City, Good Hope, Sciota, Blandinsville, Tennessee, Adair, and Industry; as well as part of Macomb.
Mercer County is split between this district and the 15th district. They are partitioned by 220th St. The 15th district takes in the communities of Aledo, Keithsburg, New Boston, Eliza, Millersburg, Joy, Seaton, and Hamlet.
Coles County is split between this district and the 12th district. They are partitioned by West St, North County Rd 1800 East, Lincoln Prairie Grass Trail, 18th St, County Rd 1600 East, County Rd 400 North, County Rd 1240 East, Illinois Route 16, Dettro Dr, 700 North Rd, Old Fellow Rd, and the Kickapoo Creek. The 15th district takes in the municipalities of Charleston and Humboldt; and most of Mattoon
Vermillion County is split between this district and the 2nd district. They are partitioned by Twin Hills Rd, 1730 East, 1295 North, 1700 East, 1200 North, 1670 Rd East, 1050 North, Highway 150, Westville Ln, 1100 North, 800 East, 1200 North, and Lincoln Trail Rd. The 15th district takes in the communities of Georgetown, Indianola, Ridge Farm, Fairmount, Allerton (shared with Champaign County), Sidell, and Olivet.

## Recent election results from statewide races

| Year | Office | Results |
| 2008 | President | McCain 52% - 44% |
| 2012 | President | Romney 62% - 38% |
| 2016 | President | Trump 66% - 28% |
| 2016 | Senate | Kirk 60% - 35% |
| 2016 | Comptroller (Spec.) | Munger 63% - 31% |
| 2018 | Governor | Rauner 56% - 30% |
| 2018 | Attorney General | Harold 69% - 28% |
| 2018 | Secretary of State | White 50% - 47% |
| 2018 | Comptroller | Senger 59% - 37% |
| 2018 | Treasurer | Dodge 59% - 38% |
| 2020 | President | Trump 68% - 30% |
| 2020 | Senate | Curran 65% - 32% |
| 2022 | Senate | Salvi 66% - 32% |
| 2022 | Governor | Bailey 69% - 28% |
| 2022 | Attorney General | DeVore 70% - 28% |
| 2022 | Secretary of State | Brady 70% - 28% |
| 2022 | Comptroller | Teresi 65% - 33% |
| 2022 | Treasurer | Demmer 67% - 31% |
| 2024 | President | Trump 69% - 29% |

## Recent election results
### 2012

The district covered much of the territory previously in the 19th district, and its incumbent, Republican John Shimkus, filed to run in the redrawn 15th. Angela Michael, a retired nurse and anti-abortion activist, ran on a single-issue anti-abortion Democratic ticket.
Illinois's 15th congressional district, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Shimkus (incumbent) | 205,775 | 68.6 |
| | Democratic | Angela Michael | 94,162 | 31.4 |
| Total votes | Total votes | Total votes | 299,937 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2014

Illinois's 15th congressional district, 2014 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Shimkus (incumbent) | 166,274 | 74.9 |
| | Democratic | Eric Thorsland | 55,652 | 25.1 |
| Total votes | Total votes | Total votes | 221,926 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2016

Shimkus faced no opposition in the general election, after facing a challenge in the Republican primary from Illinois State Senator Kyle McCarter, who had Tea Party backing and funding from the Club for Growth.
Illinois's 15th congressional district, 2016 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Shimkus (incumbent) | 274,554 | 100.0 |
| Total votes | Total votes | Total votes | 274,554 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2018

Shimkus loomed large in the 15th, but finally faced credible (if not well-funded) Democratic opposition from a local teacher and former Obama campaign worker.
Illinois's 15th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Shimkus (incumbent) | 181,294 | 70.9 |
| | Democratic | Kevin Gaither | 74,309 | 29.1 |
| | Independent | Tim E. Buckner (write-in) | 5 | 0.0 |
| Total votes | Total votes | Total votes | 255,608 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2020

After John Shimkus announced that he would not seek reelection, Republican nominee Mary Miller and Democratic nominee Erika Weaver emerged as contenders for the open Congressional seat.
Illinois's 15th congressional district, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Mary Miller | 244,947 | 73.45 | +2.52% |
| | Democratic | Erika Weaver | 88,559 | 26.55 | −2.52% |
| Total votes | Total votes | Total votes | 333,506 | 100.0 | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

### 2022

Illinois's 15th congressional district, 2022 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Miller (incumbent) | 213,007 | 71.14 |
| | Democratic | Paul Lange | 86,396 | 28.86 |
| Total votes | Total votes | Total votes | 299,403 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2024

Illinois's 15th congressional district, 2024 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Miller (incumbent) | 308,825 | 99.55 |
| | Write-in | Write-in | 1,409 | 0.45 |
| Total votes | Total votes | Total votes | 310,234 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## List of members representing the district

| Representative | Party | Years | Cong ress | Electoral history | District location |
| District created March 4, 1873 ||||||
| John R. Eden (Sullivan) | Democratic | March 4, 1873 – March 3, 1879 | 43rd 44th 45th | Elected in 1872. Re-elected in 1874. Re-elected in 1876. Lost renomination. |
| Albert P. Forsythe (Isabel) | Greenback | March 4, 1879 – March 3, 1881 | 46th | Elected in 1878. Lost re-election as a Republican. |
| Samuel W. Moulton (Shelbyville) | Democratic | March 4, 1881 – March 3, 1883 | 47th | Elected in 1880. Redistricted to the 17th district. |
| Joseph G. Cannon (Danville) | Republican | March 4, 1883 – March 3, 1891 | 48th 49th 50th 51st | Redistricted from the 14th district and re-elected in 1882. Re-elected in 1884. Re-elected in 1886. Re-elected in 1888. Lost re-election. |
| Samuel T. Busey (Urbana) | Democratic | March 4, 1891 – March 3, 1893 | 52nd | Elected in 1890. Lost re-election. |
| Joseph G. Cannon (Danville) | Republican | March 4, 1893 – March 3, 1895 | 53rd | Elected again in 1892. Redistricted to the 12th district. |
| Benjamin F. Marsh (Warsaw) | Republican | March 4, 1895 – March 3, 1901 | 54th 55th 56th | Redistricted from the 11th district and re-elected in 1894. Re-elected in 1896. Re-elected in 1898. Lost re-election. |
| J. Ross Mickey (Macomb) | Democratic | March 4, 1901 – March 3, 1903 | 57th | Elected in 1900. Retired. |
| George W. Prince (Galesburg) | Republican | March 4, 1903 – March 3, 1913 | 58th 59th 60th 61st 62nd | Redistricted from the 10th district and re-elected in 1902. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. Lost re-election. |
| Stephen A. Hoxworth (Rapatee) | Democratic | March 4, 1913 – March 3, 1915 | 63rd | Elected in 1912. Retired. |
| Edward John King (Galesburg) | Republican | March 4, 1915 – February 17, 1929 | 64th 65th 66th 67th 68th 69th 70th | Elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Died. |
| Vacant | Vacant | February 17, 1929 – November 4, 1930 | 70th 71st | |
| Burnett M. Chiperfield (Canton) | Republican | November 4, 1930 – March 3, 1933 | 71st 72nd | Elected to finish King's term. Re-elected in 1930. Lost re-election. |
| J. Leroy Adair (Quincy) | Democratic | March 4, 1933 – January 3, 1937 | 73rd 74th | Elected in 1932. Re-elected in 1934. Retired. |
| Lewis L. Boyer (Quincy) | Democratic | January 3, 1937 – January 3, 1939 | 75th | Elected in 1936. Lost re-election. |
| Robert B. Chiperfield (Canton) | Republican | January 3, 1939 – January 3, 1949 | 76th 77th 78th 79th 80th | Elected in 1938. Re-elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Redistricted to the 19th district. |
| Noah M. Mason (Oglesby) | Republican | January 3, 1949 – January 3, 1963 | 81st 82nd 83rd 84th 85th 86th 87th | Redistricted from the 12th district and re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Retired. |
| Charlotte T. Reid (Aurora) | Republican | January 3, 1963 – October 7, 1971 | 88th 89th 90th 91st 92nd | Elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Resigned to become member of the Federal Communications Commission. |
| Vacant | Vacant | October 7, 1971 – April 4, 1972 | 92nd | |
| Cliffard D. Carlson (Geneva) | Republican | April 4, 1972 – January 3, 1973 | 92nd | Elected to finish Reid's term. Retired. |
| Leslie C. Arends (Melvin) | Republican | January 3, 1973 – December 31, 1974 | 93rd | Redistricted from the 17th district and re-elected in 1972. Resigned. |
| Tim Lee Hall (Dwight) | Democratic | January 3, 1975 – January 3, 1977 | 94th | Elected in 1974. Lost re-election. |
| Tom Corcoran (Ottawa) | Republican | January 3, 1977 – January 3, 1983 | 95th 96th 97th | Elected in 1976. Re-elected in 1978. Re-elected in 1980. Redistricted to the 14th district. |
| Edward R. Madigan (Lincoln) | Republican | January 3, 1983 – March 8, 1991 | 98th 99th 100th 101st 102nd | Redistricted from the 21st district and re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Resigned to become U.S. Secretary of Agriculture. |
| Vacant | Vacant | March 8, 1991 – July 2, 1991 | 102nd | |
| Thomas W. Ewing (Pontiac) | Republican | July 2, 1991 – January 3, 2001 | 102nd 103rd 104th 105th 106th | Elected to finish Madigan's term. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Retired. |
| Timothy V. Johnson (Urbana) | Republican | January 3, 2001 – January 3, 2013 | 107th 108th 109th 110th 111th 112th | Elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Retired. | |
| Timothy V. Johnson (Urbana) | Republican | January 3, 2001 – January 3, 2013 | 107th 108th 109th 110th 111th 112th | Elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Retired. | 2003–2013 Included the cities of Charleston, Urbana, Danville, and Champaign, and all or parts of Livingston, Iroquois, Ford, McLean, DeWitt, Champaign, Vermillion, Macon, Piatt, Douglas, Edgar, Moultrie, Coles, Cumberland, Clark, Crawford, Lawrence, Wabash, Edwards, White, Saline, and Gallatin counties. |
| John Shimkus (Collinsville) | Republican | January 3, 2013 – January 3, 2021 | 113th 114th 115th 116th | Redistricted from the 19th district. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Retired. | 2013–2023 |
| Mary Miller (Oakland) | Republican | January 3, 2021 – present | 117th 118th 119th | Elected in 2020. Re-elected in 2022. Re-elected in 2024. | 2013–2023 |
| Mary Miller (Oakland) | Republican | January 3, 2021 – present | 117th 118th 119th | Elected in 2020. Re-elected in 2022. Re-elected in 2024. | 2023–present |