Indiana State Senate District 1

Tue, Nov 3 · Represented by Dan Dernulc Republican (not a candidate in 2026) · Member list as of Oct 28

No published poll names both candidates.Last result · 2022 general (different candidates): Dan Dernulc (R) 52.3, Michael W. Griffin (D) 47.7

Trevor G. De VriesRepublican

Last election: Dan Dernulc (Republican) won by 4.6 points, 2022
On the 2026 ballot: 2 candidates

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More about this race

Candidates on the ballot

Open seat

The current holder, Dan Dernulc, is not on the candidate list.

Scott HouldiesonDemocratic
Trevor G. De VriesRepublican

Source: in.gov (XLSX), dated Sep 22

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Official results for Indiana

History (13 elections for this seat)

Votes for listed candidates: 44,878
Election day: November 8, 2022
District map: Older district map (2022)

Indiana Senate District 1, 1974 to 2022, 2022, every candidate
Candidate	Party	Votes and share	Share
RepublicanDan DernulcWonName as filed: Daniel E. Dernulc	Republican	23,48652.3%	52.3%
DemocraticMichael W. Griffin	Democratic	21,39247.7%	47.7%

Votes for listed candidates: 46,722
Election day: November 6, 2018
District map: Older district map (2012 to 2021)

Indiana Senate District 1, 1974 to 2022, 2018, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank Mrvan Jr.Won(incumbent)	Democratic	29,57863.3%	63.3%
RepublicanCharles B. Kallas	Republican	17,14436.7%	36.7%

Votes for listed candidates: 26,044
Election day: November 4, 2014
District map: Older district map (2012 to 2021)

Indiana Senate District 1, 1974 to 2022, 2014, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank Mrvan Jr.Won(incumbent)	Democratic	15,53859.7%	59.7%
RepublicanKenneth R. Stevenson	Republican	10,50640.3%	40.3%

Votes for listed candidates: 27,317
Election day: November 2, 2010
District map: Older district map (2002 to 2011)

Indiana Senate District 1, 1974 to 2022, 2010, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank Mrvan Jr.Won(incumbent)	Democratic	16,47260.3%	60.3%
RepublicanDavid B. Spudic	Republican	10,84539.7%	39.7%

Votes for listed candidates: 25,643
Election day: November 7, 2006
District map: Older district map (2002 to 2011)

Indiana Senate District 1, 1974 to 2022, 2006, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon(incumbent)	Democratic	15,85261.8%	61.8%
RepublicanChris Morrow	Republican	9,79138.2%	38.2%

Indiana Senate District 1, 1974 to 2022, 2002, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon(incumbent)	Democratic	14,449100.0%	100.0%

Votes for listed candidates: 25,008
Election day: November 3, 1998
District map: Older district map (1992 to 2001)

Indiana Senate District 1, 1974 to 2022, 1998, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon	Democratic	12,73850.9%	50.9%
RepublicanSandy Dempsey(incumbent)	Republican	12,27049.1%	49.1%

Votes for listed candidates: 26,181
Election day: November 8, 1994
District map: Older district map (1992 to 2001)

Indiana Senate District 1, 1974 to 2022, 1994, every candidate
Candidate	Party	Votes and share	Share
RepublicanSandy DempseyWon	Republican	13,09250.0%	50.0%
DemocraticFrank Mrvan(incumbent)	Democratic	13,08950.0%	50.0%

Indiana Senate District 1, 1974 to 2022, 1990, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon(incumbent)	Democratic	14,808100.0%	100.0%

Votes for listed candidates: 22,524
Election day: November 4, 1986
District map: Older district map (1982 to 1991)

Indiana Senate District 1, 1974 to 2022, 1986, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon(incumbent)	Democratic	17,92079.6%	79.6%
RepublicanGregory J. Sanchez	Republican	4,60420.4%	20.4%

Votes for listed candidates: 27,735
Election day: November 2, 1982
District map: Older district map (1982 to 1991)

Indiana Senate District 1, 1974 to 2022, 1982, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon(incumbent)	Democratic	22,62381.6%	81.6%
RepublicanJohn F. Drac	Republican	5,11218.4%	18.4%

Votes for listed candidates: 21,179
Election day: November 7, 1978
District map: Older district map (1972 to 1981)

Indiana Senate District 1, 1974 to 2022, 1978, every candidate
Candidate	Party	Votes and share	Share
DemocraticFrank MrvanWon	Democratic	17,37782.0%	82.0%
RepublicanRobert J. Cantrell	Republican	3,80217.9%	17.9%

Votes for listed candidates: 24,251
Election day: November 4, 1974
District map: Older district map (1972 to 1981)

Indiana Senate District 1, 1974 to 2022, 1974, every candidate
Candidate	Party	Votes and share	Share
DemocraticWilliam C. ChristyWon(incumbent)	Democratic	19,64181.0%	81.0%
RepublicanMary T. Thompson	Republican	4,61019.0%	19.0%

1974 to 2022: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source

Only part of this chamber is up in a given cycle. Which districts vote on which date is not on file. Last contest in this district on file: 2022.

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Election Wrld. (2026). Indiana State Senate District 1, election results 1974 to 2022. https://www.electionwrld.com/in/senate/1. Retrieved October 31, 2026.

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Sources

Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.

District id: ocd-division/country:us/state:in/sldu:1

DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026