Illinois State Senate seat · lines in effect since 2022
Illinois Legislative District 19
A district of about 215,000 people, 28% Black, 41% of adults with a bachelor's degree. It votes D+10.1 relative to the nation for president.
2024 election
Nov 5, 2024- Mike Hastings (D) · won56.4%
- Samantha Jean Gasca (R)43.6%
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 59 seats
Every Illinois State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
18 races since 1970. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2024 | Mike Hastings (D) | Samantha Jean Gasca (R) | 12.7 |
| 2022 | Mike Hastings (D) | Patrick Sheehan (R) | 1.2 |
| Lines first used in 2012 | |||
| 2020 | Mike Hastings (D) | — | Unopposed |
| 2016 | Mike Hastings (D) | — | Unopposed |
| 2012 | Mike Hastings (D) | Edgar Montalvo (R) | 24.4 |
| Lines first used in 2002 | |||
| 2010 | M. Crotty (D) | Adam Wojcik (R) | 33.5 |
| 2006 | M. Crotty (D) | Eric M. Wallace (R) | 53.6 |
| 2002 | M. Crotty (D) | Brian H. Younker (R) | 33.9 |
| Lines first used in 1992 | |||
| 1998 | William F. Mahar (R) | Pam Woodward (D) | 13.6 |
| 1996 | William F. Mahar (R) | Richard R. Dellacroce (D) | 16.5 |
| 1992 | William F. Mahar (R) | David L. Anders (D) | 26.9 |
| Lines first used in 1982 | |||
| 1988 | William F. Mahar (R) | James J. Hyland Jr. (D) | 45.8 |
| 1984 | William F. Mahar (R) | Robert H. Kaup Jr. (D) | 36.8 |
| 1982 | William F. Mahar (R) | Robert H. Kaup Jr. (D) | 37.7 |
| Lines first used in 1972 | |||
| 1978 | Edward A. Nedza (D) | — | Unopposed |
| 1974 | Harold M. Nudelman (D) | Boris R. Antonovych (R) | 78.4 |
| 1972 | Harold M. Nudelman (D) | Nicholas F. Grimaldi (R) | 58.1 |
| Lines first used in 1962 | |||
| 1970 | Norbert A. Kosinski (D) | Nicholas F. Grimaldi (R) | 78.2 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 19
The state's districts in other chambers that share residents with this one, and the share of District 19's area in each.
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2020 | |
|---|---|---|---|
| President | R+17.3 | No race | R+15.1 |
| U.S. Senate | R+13.5 | No race | R+13.4 |
| Governor | No race | R+16.1 | No race |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 PM ET
Who lives here, compared
Grey bars show the spread of all 59 seats. Small marks are other seats in Illinois. The black marker is District 19.
Higher than 64% of seats.
Higher than 55% of seats.
Lower than 79% of seats.
Higher than 84% of seats.
Lower than 72% of seats.
Less dense than 52% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 1837% college gradsD+10.2Held DDistrict 57
30% Black · 30% college gradsD+11.6Held DDistrict 46
34% college gradsD+16.2Not up in 2026District 48
32% college gradsD+3.9Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET