Idaho State Senate District 35
Tue, Nov 3 · Represented by Mark Harris Republican · Member list as of Oct 28
No published poll names both candidates.Last result · 2024 general: Mark Harris (R) 77.5, Chris Riley (D) 22.5
- Last election
- Mark Harris (Republican) won by 55.0 points, 2024
- On the 2026 ballot
- 2 candidates
Side by side
Left column: HarrisRight column: Kilhefner
- Donor-based spectrum
- LiberalCentristConservativeHarrisNo published score for Kilhefner
- Races
- Won 5 of 5
- None listed
- Years since first win
- 4
- Not available
How these are counted
The spectrum is a published research score, not our rating. How this works. Wins and losses count the races in our results files, the same as each profile.
More about this race
Candidates on the ballot
- Marty Rotz KilhefnerDemocratic
- Mark HarrisIncumbentRepublican
Source: run.voteidaho.gov, dated Oct 28
All State Senate districts
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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History (25 elections for this seat)
- Votes for listed candidates
- 26,969
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Idaho Senate District 35, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMark HarrisWon Republican 20,90777.5% DemocraticChris Riley Democratic 6,06222.5% - Votes for listed candidates
- 13,397
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Idaho Senate District 35, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanMark HarrisWon(incumbent) Republican 13,397100.0% - Votes for listed candidates
- 20,334
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Idaho Senate District 35, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanVan BurtenshawWon(incumbent) Republican 20,334100.0% - Votes for listed candidates
- 13,123
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
Idaho Senate District 35, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanVan BurtenshawWon Republican 13,123100.0% - Votes for listed candidates
- 16,665
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Idaho Senate District 35, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanJeff C. SiddowayWon(incumbent) Republican 16,665100.0% - Votes for listed candidates
- 11,166
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
Idaho Senate District 35, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanJeff C. SiddowayWon(incumbent) Republican 11,166100.0% - Votes for listed candidates
- 16,745
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Idaho Senate District 35, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanJeff C. SiddowayWon(incumbent) Republican 16,745100.0% - Votes for listed candidates
- 12,571
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Idaho Senate District 35, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanJeff C. SiddowayWon(incumbent) Republican 12,571100.0% - Votes for listed candidates
- 18,844
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Idaho Senate District 35, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanJeffery C. SiddowayWon(incumbent) Republican 14,65577.8% DemocraticLuke Prange Democratic 4,18922.2% - Votes for listed candidates
- 14,145
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Idaho Senate District 35, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share RepublicanJeff C. SiddowayWon Republican 9,81869.4% DemocraticLuke Prange Democratic 4,32730.6% - Votes for listed candidates
- 17,124
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Idaho Senate District 35, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanDon M. BurtenshawWon(incumbent) Republican 13,15576.8% DemocraticJerry L. Browne Democratic 3,96923.2% - Votes for listed candidates
- 13,603
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Idaho Senate District 35, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanDon M. BurtenshawWon(incumbent) Republican 10,37076.2% DemocraticJerry L. Browne Democratic 3,23323.8% - Votes for listed candidates
- 8,440
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Idaho Senate District 35, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanRalph WheelerWon(incumbent) Republican 8,440100.0% - Votes for listed candidates
- 6,866
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Idaho Senate District 35, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanRalph WheelerWon(incumbent) Republican 6,866100.0% - Votes for listed candidates
- 10,881
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Idaho Senate District 35, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanRalph WheelerWon(incumbent) Republican 6,62360.9% DemocraticPhillip B. Christiansen Democratic 4,25839.1% - Votes for listed candidates
- 9,505
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
Idaho Senate District 35, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share RepublicanRalph WheelerWon Republican 5,14654.1% DemocraticChick Bilyeu(incumbent) Democratic 4,35945.9% - Votes for listed candidates
- 11,222
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Idaho Senate District 35, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 5,77251.4% RepublicanRalph Wheeler Republican 5,45048.6% - No results on file 1983 to 1991
- Votes for listed candidates
- 8,878
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1983)
Idaho Senate District 35, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 4,93155.5% RepublicanW. Rusty Barlow Republican 3,94744.5% - Votes for listed candidates
- 15,464
- Election day
- November 4, 1980
- District map
- Older district map (1976 to 1981)
Idaho Senate District 35, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 8,03151.9% RepublicanRalph Wheeler Republican 7,43348.1% - Votes for listed candidates
- 10,761
- Election day
- November 7, 1978
- District map
- Older district map (1976 to 1981)
Idaho Senate District 35, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 5,77153.6% RepublicanMark Duffin Republican 4,50641.9% LibertarianRoger L. Stevens Libertarian 4844.5% - Votes for listed candidates
- 11,449
- Election day
- November 2, 1976
- District map
- Older district map (1976 to 1981)
Idaho Senate District 35, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 7,07461.8% RepublicanRichard L. Bauer Republican 4,37538.2% - Votes for listed candidates
- 7,716
- Election day
- November 4, 1974
- District map
- Older district map (1974 to 1975)
Idaho Senate District 35, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 4,65560.3% RepublicanJack T. Egbert Republican 3,06139.7% - Votes for listed candidates
- 8,684
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1973)
Idaho Senate District 35, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share DemocraticChick BilyeuWon(incumbent) Democratic 4,42951.0% RepublicanJoseph Allen(incumbent) Republican 4,25549.0% - Votes for listed candidates
- 6,684
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
Idaho Senate District 35, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticCharles BilyeuWon Democratic 4,42666.2% RepublicanKent J. Parrish Republican 2,25833.8% - Votes for listed candidates
- 7,674
- Election day
- November 5, 1968
- District map
- Older district map (1966 to 1971)
Idaho Senate District 35, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share DemocraticDiane BilyeuWon Democratic 3,98051.9% RepublicanWillis R. Ward(incumbent) Republican 3,69448.1%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
- 1968 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
Last contest in this district on file: 2024.
Download and cite
Cite this page
Election Wrld. (2026). Idaho State Senate District 35, election results 1968 to 2024. https://www.electionwrld.com/id/senate/35. Retrieved October 30, 2026.
Embed this seat
<iframe src="https://www.electionwrld.com/embed/id/senate/35" title="Idaho Senate District 35" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>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; MEDSL 2024 official precinct returns (individual_states zips) (Not stated in the GitHub repository (an earlier label said "MIT (repo)", which the repository does not support). MEDSL's Harvard Dataverse records are CC0 1.0, but these GitHub files were not checksum-matched to the Dataverse files, so CC0 is not claimed for them.), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) 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:id/sldu:35
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), DIME (ODC-BY), MEDSL 2024 official precinct returnsData as of Oct 28, 2026