Alaska State House District 15

Tue, Nov 3 · Represented by Mia Costello Republican · Member list as of Oct 28

Mia CostelloRepublican · Incumbent2 years since first win

Mia Costello 51.6Denny Wells 45.6

Last result · 2024 generalNo published poll names both candidates.

Denny WellsDemocratic4 years since first win

Last election: Mia Costello (Republican) won by 6.0 points, 2024
On the 2026 ballot: 2 candidates

All State House districts

Side by side

Left column: CostelloRight column: Wells

Donor-based spectrum: LiberalCentristConservativeWellsNo published score for Costello
Races: Won 1 of 1; Won 1 of 2
Years since first win: 2; 4

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

Mia CostelloIncumbentRepublican
Denny WellsDemocratic

Source: elections.alaska.gov, dated Sep 25

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Official results for Alaska

History (29 elections for this seat)

Votes for listed candidates: 8,799
Election day: November 5, 2024
District map: Older district map (2022 to 2024)

Alaska House of Representatives District 15, 1968 to 2024, 2024, every candidate
Candidate	Party	Votes and share	Share
RepublicanMia CostelloWon	Republican	4,54351.6%	51.6%
DemocraticDenny Wells	Democratic	4,01445.6%	45.6%
DemocraticDustin T. Darden	Democratic	2422.8%	2.8%

Votes for listed candidates: 7,253
Election day: November 8, 2022
District map: Older district map (2022)

Alaska House of Representatives District 15, 1968 to 2024, 2022, every candidate
Candidate	Party	Votes and share	Share
DemocraticDenny WellsWon	Democratic	3,37946.6%	46.6%
RepublicanThomas W. McKay(incumbent)	Republican	2,81238.8%	38.8%
RepublicanDavid Eibeck	Republican	1,02614.2%	14.2%
Scattered write-ins	Write-in	360.5%	0.5%

Votes for listed candidates: 4,987
Election day: November 3, 2020
District map: Older district map (2014 to 2021)

Alaska House of Representatives District 15, 1968 to 2024, 2020, every candidate
Candidate	Party	Votes and share	Share
RepublicanDavid NelsonWon	Republican	2,54151.0%	51.0%
DemocraticLyn D. Franks	Democratic	2,44649.0%	49.0%

Votes for listed candidates: 2,519
Election day: November 6, 2018
District map: Older district map (2014 to 2021)

Alaska House of Representatives District 15, 1968 to 2024, 2018, every candidate
Candidate	Party	Votes and share	Share
RepublicanGabrielle LedouxWon(incumbent)	Republican	1,38054.8%	54.8%
DemocraticLyn D. Franks	Democratic	1,13945.2%	45.2%

Votes for listed candidates: 4,196
Election day: November 8, 2016
District map: Older district map (2014 to 2021)

Alaska House of Representatives District 15, 1968 to 2024, 2016, every candidate
Candidate	Party	Votes and share	Share
RepublicanGabrielle LedouxWon(incumbent)	Republican	2,83467.5%	67.5%
DemocraticPatrick M. McCormack	Democratic	1,34432.0%	32.0%
Scattered write-ins	Write-in	180.4%	0.4%

Votes for listed candidates: 3,777
Election day: November 4, 2014
District map: Older district map (2014 to 2021)

Alaska House of Representatives District 15, 1968 to 2024, 2014, every candidate
Candidate	Party	Votes and share	Share
RepublicanGabrielle LedouxWon(incumbent)	Republican	1,99552.8%	52.8%
DemocraticLaurie Hummel	Democratic	1,78247.2%	47.2%

Votes for listed candidates: 5,443
Election day: November 6, 2012
District map: Older district map (2012 to 2013)

Alaska House of Representatives District 15, 1968 to 2024, 2012, every candidate
Candidate	Party	Votes and share	Share
DemocraticAndrew L. JosephsonWon	Democratic	3,14257.7%	57.7%
RepublicanDick Traini	Republican	2,27641.8%	41.8%
Scattered write-ins	Write-in	250.5%	0.5%

Alaska House of Representatives District 15, 1968 to 2024, 2010, every candidate
Candidate	Party	Votes and share	Share
RepublicanMark NeumanWon(incumbent)	Republican	6,963100.0%	100.0%

Votes for listed candidates: 9,961
Election day: November 4, 2008
District map: Older district map (2002 to 2011)

Alaska House of Representatives District 15, 1968 to 2024, 2008, every candidate
Candidate	Party	Votes and share	Share
RepublicanMark A. NeumanWon(incumbent)	Republican	7,64576.8%	76.8%
DemocraticLew Dischner	Democratic	2,31623.3%	23.3%

Votes for listed candidates: 7,115
Election day: November 7, 2006
District map: Older district map (2002 to 2011)

Alaska House of Representatives District 15, 1968 to 2024, 2006, every candidate
Candidate	Party	Votes and share	Share
RepublicanMark A. NeumanWon(incumbent)	Republican	4,12558.0%	58.0%
IndependentMyrl Thompson	Independent	2,99042.0%	42.0%

Votes for listed candidates: 8,049
Election day: November 2, 2004
District map: Older district map (2002 to 2011)

Alaska House of Representatives District 15, 1968 to 2024, 2004, every candidate
Candidate	Party	Votes and share	Share
RepublicanMark A. NeumanWon	Republican	3,93648.9%	48.9%
IndependentMyrl Thompson	Independent	2,81335.0%	35.0%
OtherDoyle E. Holmes	Other	1,30016.1%	16.1%

Votes for listed candidates: 5,812
Election day: November 5, 2002
District map: Older district map (2002 to 2011)

Alaska House of Representatives District 15, 1968 to 2024, 2002, every candidate
Candidate	Party	Votes and share	Share
RepublicanBeverly L. MasekWon(incumbent)	Republican	3,47659.8%	59.8%
DemocraticKay Bills	Democratic	1,76330.3%	30.3%
OtherJon B. Pinard	Other	5569.6%	9.6%
Scattered write-ins	Write-in	170.3%	0.3%

Votes for listed candidates: 4,920
Election day: November 7, 2000
District map: Older district map (1992 to 2001)

Alaska House of Representatives District 15, 1968 to 2024, 2000, every candidate
Candidate	Party	Votes and share	Share
DemocraticEric C. CroftWon(incumbent)	Democratic	3,17364.5%	64.5%
RepublicanAdam L. Petersen	Republican	1,74735.5%	35.5%

Votes for listed candidates: 4,081
Election day: November 3, 1998
District map: Older district map (1992 to 2001)

Alaska House of Representatives District 15, 1968 to 2024, 1998, every candidate
Candidate	Party	Votes and share	Share
DemocraticEric C. CroftWon(incumbent)	Democratic	2,84269.6%	69.6%
RepublicanBud Knox	Republican	1,23930.4%	30.4%

Votes for listed candidates: 4,282
Election day: November 5, 1996
District map: Older district map (1992 to 2001)

Alaska House of Representatives District 15, 1968 to 2024, 1996, every candidate
Candidate	Party	Votes and share	Share
DemocraticEric C. CroftWon	Democratic	2,49958.4%	58.4%
RepublicanDon Smith	Republican	1,78341.6%	41.6%

Votes for listed candidates: 4,178
Election day: November 8, 1994
District map: Older district map (1992 to 2001)

Alaska House of Representatives District 15, 1968 to 2024, 1994, every candidate
Candidate	Party	Votes and share	Share
DemocraticKay BrownWon(incumbent)	Democratic	2,65163.5%	63.5%
RepublicanEd Jenkins	Republican	1,52736.5%	36.5%

Votes for listed candidates: 4,615
Election day: November 3, 1992
District map: Older district map (1992 to 2001)

Alaska House of Representatives District 15, 1968 to 2024, 1992, every candidate
Candidate	Party	Votes and share	Share
DemocraticKay BrownWon(incumbent)	Democratic	3,45975.0%	75.0%
OtherJim Doil	Other	1,15625.1%	25.1%

Votes for listed candidates: 22,810
Election day: November 6, 1990
Seats: 2
District map: Older district map (1984 to 1991)

Alaska House of Representatives District 15, 1968 to 2024, 1990, every candidate
Candidate	Party	Votes and share	Share
RepublicanRandy PhillipsWon(incumbent)	Republican	6,79459.3%	59.3%
RepublicanMary MillerWon	Republican	5,92552.2%	52.2%
DemocraticJohn A. Ginsburg	Democratic	5,43147.8%	47.8%
DemocraticJim Arlington	Democratic	4,66040.7%	40.7%

Votes for listed candidates: 23,728
Election day: November 8, 1988
Seats: 2
District map: Older district map (1984 to 1991)

Alaska House of Representatives District 15, 1968 to 2024, 1988, every candidate
Candidate	Party	Votes and share	Share
RepublicanRandy PhillipsWon(incumbent)	Republican	9,07877.4%	77.4%
DemocraticSam CottenWon(incumbent)	Democratic	6,64155.4%	55.4%
RepublicanPaul Miller	Republican	5,34844.6%	44.6%
DemocraticKen Cook	Democratic	2,62622.4%	22.4%
Scattered write-ins	Write-in	250.2%	0.2%
Scattered write-ins	Write-in	100.1%	0.1%

Votes for listed candidates: 18,243
Election day: November 4, 1986
Seats: 2
District map: Older district map (1984 to 1991)

Alaska House of Representatives District 15, 1968 to 2024, 1986, every candidate
Candidate	Party	Votes and share	Share
RepublicanRandy PhillipsWon(incumbent)	Republican	8,24297.1%	97.1%
DemocraticSam CottenWon(incumbent)	Democratic	5,86160.1%	60.1%
RepublicanJohn J. Liska	Republican	3,86939.7%	39.7%
Scattered write-ins	Write-in	2462.9%	2.9%
Scattered write-ins	Write-in	250.3%	0.3%

Votes for listed candidates: 23,120
Election day: November 6, 1984
Seats: 2
District map: Older district map (1984 to 1991)

Alaska House of Representatives District 15, 1968 to 2024, 1984, every candidate
Candidate	Party	Votes and share	Share
RepublicanRandy PhillipsWon(incumbent)	Republican	8,94878.3%	78.3%
DemocraticSam CottenWon	Democratic	6,13852.5%	52.5%
RepublicanJohn J. Liska(incumbent)	Republican	5,53347.3%	47.3%
DemocraticJohnny Watson	Democratic	2,44521.4%	21.4%
Scattered write-ins	Write-in	290.3%	0.3%
Scattered write-ins	Write-in	270.2%	0.2%

Votes for listed candidates: 17,873
Election day: November 2, 1982
Seats: 2
District map: Older district map (1982 to 1983)

Alaska House of Representatives District 15, 1968 to 2024, 1982, every candidate
Candidate	Party	Votes and share	Share
RepublicanRandy PhillipsWon(incumbent)	Republican	5,91067.1%	67.1%
RepublicanJohn J. LiskaWon	Republican	4,59850.7%	50.7%
DemocraticSam Cotten(incumbent)	Democratic	4,45449.1%	49.1%
DemocraticCharlie Willis	Democratic	2,85032.4%	32.4%
Scattered write-ins	Write-in	420.5%	0.5%
Scattered write-ins	Write-in	190.2%	0.2%

Votes for listed candidates: 1,712
Election day: November 4, 1980
District map: Older district map (1974 to 1981)

Alaska House of Representatives District 15, 1968 to 2024, 1980, every candidate
Candidate	Party	Votes and share	Share
RepublicanEric SutcliffeWon	Republican	98057.2%	57.2%
DemocraticAlvin Osterback(incumbent)	Democratic	72742.5%	42.5%
Scattered write-ins	Write-in	50.3%	0.3%

Votes for listed candidates: 1,108
Election day: November 7, 1978
District map: Older district map (1974 to 1981)

Alaska House of Representatives District 15, 1968 to 2024, 1978, every candidate
Candidate	Party	Votes and share	Share
DemocraticAlvin OsterbackWon(incumbent)	Democratic	68261.5%	61.5%
RepublicanStanley Mack	Republican	42238.1%	38.1%
Scattered write-ins	Write-in	40.4%	0.4%

Votes for listed candidates: 1,178
Election day: November 2, 1976
District map: Older district map (1974 to 1981)

Alaska House of Representatives District 15, 1968 to 2024, 1976, every candidate
Candidate	Party	Votes and share	Share
DemocraticAlvin OsterbackWon(incumbent)	Democratic	1,08992.4%	92.4%
Scattered write-ins	Write-in	897.6%	7.6%

Votes for listed candidates: 1,037
Election day: November 4, 1974
District map: Older district map (1974 to 1981)

Alaska House of Representatives District 15, 1968 to 2024, 1974, every candidate
Candidate	Party	Votes and share	Share
DemocraticAlvin OsterbackWon	Democratic	70167.6%	67.6%
RepublicanJacob Laktonen(incumbent)	Republican	33632.4%	32.4%

Votes for listed candidates: 2,211
Election day: November 7, 1972
District map: Older district map (1972 to 1973)

Alaska House of Representatives District 15, 1968 to 2024, 1972, every candidate
Candidate	Party	Votes and share	Share
DemocraticPhillip GuyWon	Democratic	1,86584.3%	84.3%
RepublicanMurran	Republican	34615.7%	15.7%

Votes for listed candidates: 1,743
Election day: November 3, 1970
District map: Older district map (1966 to 1971)

Alaska House of Representatives District 15, 1968 to 2024, 1970, every candidate
Candidate	Party	Votes and share	Share
DemocraticLeslie E. SwansonWon	Democratic	1,08462.2%	62.2%
RepublicanMercer	Republican	65937.8%	37.8%

Votes for listed candidates: 2,067
Election day: November 5, 1968
District map: Older district map (1966 to 1971)

Alaska House of Representatives District 15, 1968 to 2024, 1968, every candidate
Candidate	Party	Votes and share	Share
RepublicanJohn SackettWon(incumbent)	Republican	1,15155.7%	55.7%
DemocraticPearson	Democratic	91644.3%	44.3%

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.

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Election Wrld. (2026). Alaska State House District 15, election results 1968 to 2024. https://www.electionwrld.com/ak/house/15. 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; 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:ak/sldl:15

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