2018 general · November 6, 2018
2018 Indiana State Senate election results, district by district
Every Indiana State Senate district in the 2018 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Republicans controlled the chamber · 50 seats
After the electionD 10 · R 40
Races25
Changed party1
Unopposed24%6 races
Incumbents defeated1
Every district
D 4 · R 21
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-1 | Frank Marvan (D) | 26.6 | |
| SD-4 | Karen Tallian (D) | 20.8 | |
| SD-6 | Rick Niemeyer (R) | 26.7 | |
| SD-11 | Linda Rogers (R) | 22.4 | |
| SD-14 | Dennis K. Kruse (R) | Unopposed | |
| SD-15 | Liz Brown (R) | 10.8 | |
| SD-17 | Andy Zay (R) | 44.7 | |
| SD-19 | Travis Holdman (R) | Unopposed | |
| SD-21 | Jim Buck (R) | 30.9 | |
| SD-22 | Ron Alting (R) | 10.7 | |
| SD-23 | Philip L. Boots (R) | Unopposed | |
| SD-25 | Timothy S. Lanane (D) | 7.8 | |
| SD-26 | Mike Gaskill (R) | 19.0 | |
| SD-27 | Jeff Raatz (R) | 41.8 | |
| SD-29 | J.D. Ford (D) | 13.4 | FlippedIncumbent lost |
| SD-31 | James W. Merritt Jr. (R) | 2.7 | |
| SD-38 | Jon Ford (R) | 11.8 | |
| SD-39 | Eric Bassler (R) | Unopposed | |
| SD-41 | Greg Walker (R) | 33.2 | |
| SD-43 | Clyde A. Perfect Jr. (R) | Unopposed | |
| SD-45 | Chris Garten (R) | 28.6 | |
| SD-46 | Ron Grooms (R) | 9.0 | |
| SD-47 | Erin Houchin (R) | 31.1 | |
| SD-48 | Mark Messmer (R) | Unopposed | |
| SD-49 | Jim Tomes (R) | 27.9 |
Indiana State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: Harvard Dataverse / Carl Klarner; MIT Election Data and Science Lab