Indiana State Senate seat · lines in effect since 2022
Indiana Senate District 18
A district of about 139,000 people, 19% of adults with a bachelor's degree. It votes R+53.1 relative to the nation for president.
2024 election
Nov 5, 2024- Stacey Donato (R) · won100.0%
Unopposed.
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 50 seats
Every Indiana 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
14 races since 1972; the seat changed party 2 times. 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 | Stacey Donato (R) | — | Unopposed |
| Lines first used in 2012 | |||
| 2020 | Stacey Donato (R) | Laura Fredsmith (D) | 46.5 |
| 2016 | Randall Head (R) | David Wolkins (R) | 96.6 |
| 2012 | Randall Head (R) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Randall Head (R) | Linda L. Klinck (D) | 18.4 |
| 2004 | Thomas K. Weatherwax (R) | — | Unopposed |
| Lines first used in 1992 | |||
| 2000 | Thomas K. Weatherwax (R) | Star Nelson (I) | 86.8 |
| 1996 | Thomas K. Weatherwax (R) | Charles E. Ellison (D) | 36.0 |
| 1992 | Thomas K. Weatherwax (R) | Kent Kimpel (D) | 8.0 |
| Lines first used in 1982 | |||
| 1988 | Thomas K. Weatherwax (R) | — | Unopposed |
| 1984 | William F. Justice (R) | Mary A. Cotner (D) | 18.4 |
| Lines first used in 1972 | |||
| 1980 | William F. Justice (R)Flip | Arlen B. Good (D) | 6.2 |
| 1976 | Robert E. Peterson (D)Flip | Jean Sullian (R) | 2.8 |
| 1972 | Leo Sullivan (R) | Robert E. Peterson (D) | 1.1 |
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 18
The state's districts in other chambers that share residents with this one, and the share of District 18'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.
| 2024 | |
|---|---|
| President | R+52.5 |
| U.S. Senate | R+52.6 |
| Governor | R+40.8 |
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 50 seats. Small marks are other seats in Indiana. The black marker is District 18.
Lower than 88% of seats.
Higher than 82% of seats.
Higher than 73% of seats.
Lower than 86% of seats.
Lower than 78% of seats.
Less dense than 90% 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 13IndianaR+49.5Not up in 2026District 44
22% college gradsR+46.5Not up in 2026District 17
21% college gradsR+46.6Held RDistrict 48
20% college gradsR+44.3Held R
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