Illinois House District 100
State House District 100
Covers all of Pike County, Greene County, Jersey County, Calhoun County and Scott County; parts of Macoupin County, Adams County, Morgan County, Madison County and Brown County.
Who Holds This Seat
Running in 2026
Republican · State Representative
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Oct 4
- Raised
- Not on file
- Cash on Hand
- Not on file
No finance filing on record.
The District
Includes Godfrey (part), Jerseyville, Pittsfield, Adams, Batchtown, Brighton, Carrollton, Grafton, Greenfield, Hardin, Holiday Shores (part), Hull and 64 more.
158 precincts · District lines: State house lines: U.S. Census Bureau (1:500,000 cartographic boundary) · Precinct lines: Chicago Board of Election Commissioners, Boundaries - Ward Precincts (2023-2024) (data.cityofchicago.org 6piy-vbxa) for the City of Chicago; Cook County Clerk, Suburban Cook Election Precincts - Current (datacatalog.cookcountyil.gov k7sw-w3b8); DuPage County, Election_Precincts layer (gis.dupageco.org, current, retrieved 2026-09-24); U.S. Census Bureau 2020 VTDs elsewhere in Illinois; U.S. Census Bureau 2020 TIGER/Line VTDs where no official layer
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President150 precinctsIllinois State Board of ElectionsOfficial vote | Donald J. Trump (R)35,801 · 73.6% | Kamala D. Harris (D)11,882 · 24.4% | R+49.2 | 48,643 | Illinois State Board of ElectionsOfficial vote |
| 2022 U.S. Senate152 precinctsIllinois State Board of ElectionsOfficial vote | Kathy Salvi (R)26,867 · 69.2% | Tammy Duckworth (D)11,130 · 28.7% | R+40.5 | 38,817 | Illinois State Board of ElectionsOfficial vote |
| 2022 Governor124 precinctsIllinois State Board of ElectionsOfficial vote | Darren Bailey (R)28,967 · 74.0% | Jb Pritzker (D)9,284 · 23.7% | R+50.3 | 39,165 | Illinois State Board of ElectionsOfficial vote |
| 2020 President142 precinctsIllinois State Board of ElectionsOfficial vote | Donald J. Trump (R)42,025 · 71.7% | Joseph R. Biden (D)15,305 · 26.1% | R+45.6 | 58,594 | Illinois State Board of ElectionsOfficial vote |
| 2020 U.S. Senate142 precinctsIllinois State Board of ElectionsOfficial vote | Mark C. Curran Jr. (R)38,307 · 66.7% | Richard J. Durbin (D)17,531 · 30.5% | R+36.2 | 57,464 | Illinois State Board of ElectionsOfficial vote |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Representative, District 100
2024 General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Christopher "C.D." DavidsmeyerRepublican | Republican | 50,793 | 100.0% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct
State Representative, District 100
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Christopher "c.D." DavidsmeyerRepublican | Republican | 40,156 | 100.0% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct
State Representative, District 100
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Christopher "c.D." DavidsmeyerRepublican | Republican | 38,578 | 75.1% |
| Brandon AdamsDemocrat | Democrat | 10,533 | 20.5% |
| Ralph SidesPro-Gun Pro-Life Party | Pro-Gun Pro-Life Party | 2,250 | 4.4% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct