Portland-Auburn · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
69.9%
194,361 votes · D+39.8
Runner-up · Barack Obama, 2008 · 59.4%
Republican
Dwight D. Eisenhower1956
68.6%
182,529 votes · R+37.1
Runner-up · Calvin Coolidge, 1924 · 68.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
350,902votes
55.3% of the vote · D+14.4
Runner-up · Kamala Harris, 2024 · 350,801 votes
Republican
Donald Trump2024
271,787votes
42.7% of the vote · D+12.4
Runner-up · Donald Trump, 2020 · 259,602 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Lyndon B. Johnson1964
+17.2pts D vs U.S.
Place D+39.8 · U.S. D+22.6
Runner-up · Hubert Humphrey, 1968 · +15.4 pts
Republican
William McKinley1896
+32.3pts R vs U.S.
Place R+38.4 · U.S. R+6.1
Runner-up · Alf Landon, 1936 · +31.9 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
Portland-Auburn · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in Portland-Auburn, by party and cycle.
Party
2008
2012
2016
2020
2024
Democratic
Obama9Clinton220,673 votes · 11 of 11 countiescaucus + primary
○no contest record
Sanders1117,286 votes · 11 of 11 countiescaucus + primary
Biden6Sanders4Buttigieg1172,600 votes · 11 of 11 countiesprimary
○no contest record
Republicannot ingested
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
voter registration
Registered voters
By party of registration, over time
Party registration · 2026R+12.2
vs
Presidential vote · 2024D+12.4
Portland-Auburn registers Republican but votes Democratic — a 25-point gap between how voters register and how they vote, the signature of ancestral registration that trails realignment.
61,038 registered voters · 2026 · down from 737,833 in 2025
Democratic23.6%Republican35.9%Unaffiliated40.5%
domestic migration
Who moves in and out
Net domestic migration over time
+6,038 net domestic migration · 2025
20112025
Net +66,136 over 2011–2025 · gain loss
Domestic migration in Portland-Auburn in Portland-Auburn: net domestic migration by year
Year
Net domestic migration
2011
+155
2012
−217
2013
+113
2014
+2,816
2015
+699
2016
+3,287
2017
+4,777
2018
+6,021
2019
+5,870
2021
+15,369
2022
+10,409
2023
+6,708
2024
+4,091
2025
+6,038
The Portland-Auburn market covers roughly half of Maine's population and consistently posts the state's most competitive federal margins, making it a reliable bellwether for statewide outcomes.
Across the recorded series it reached a Democratic high of 39.8 points in 1964 and a Republican high of 43.1 points in 1924. Between 2020 and 2024 the market moved 2.0 points toward the Republican candidate; the 2024 margin was 12.4 points.
A population of 1,052,919, a 89% non-Hispanic-white share, and a median household income of $81,554 describe the market. The market's voting pattern over the last decade is most similar to that of Burlington-Plattsburgh and Eugene.
Akashic
Political twins — media markets
The media markets whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Portland-Auburn, Maine. Akashic. https://akashic.app/dma/500/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Portland-Auburn, Maine voted Democratic by 12.4 points (D+12.4), carried by the Democratic candidate. Out of 635,985 votes cast, 350,801 went Democratic and 271,787 went Republican.
When did Portland-Auburn, Maine last vote Republican?
The most recent presidential election in which Portland-Auburn, Maine voted Republican was 1988.
How many people live in Portland-Auburn, Maine?
Portland-Auburn, Maine has a population of 1,052,919 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Portland-Auburn, Maine?
Median household income in Portland-Auburn, Maine is $81,554 — above the national median of $80,734. The Maine state median is $74,733.
What is the political history of Portland-Auburn, Maine?
Akashic tracks 34 presidential elections in Portland-Auburn, Maine from 1892 to 2024. Of those, 15 went Democratic and 19 went Republican.
