Participation measured against the same-year citizen voting-age population. Audited cycles count total general-election participants — ballots or participating voters, not presidential candidate votes. Cycles before 2016 predate that series and are derived from the certified presidential returns instead; they are marked everywhere they appear and are excluded from the figures below.
2004–20248 cycles · 5 audited
2024 turnout
57.9%15,721 participants ÷ 27,145 CVAP
2020→2022 drop-off
+22.9 ptsPresidential-dependent
Drop-off vs state
-2.8 ptsPositive means a larger decline than the statewide pattern
Mechanical 2026
35.0%–41.5%Recent-cycle and two-cycle persistence scenarios; not a forecast
Participation by cycle
Presidential Midterm Derived, pre-2016
0%20%40%60%
46.1%
40.7%
20042008201220162018202020222024
Select a presidential cycle to show it on the map and results ledger above.
Cycle
Participants
CVAP
Turnout
Series
Quality
15,721
27,145 ± 312
57.9%
Audited
E/A
2022Mid
10,970
26,951 ± 360
40.7%
Audited
E/A
16,408
25,784 ± 345
63.6%
Audited
E/A
2018Mid
11,739
25,465 ± 266
46.1%
Audited
E/A
14,267
25,509 ± 272
55.9%
Audited
E/A
13,437
24,811
54.2%
Derived
—
14,607
24,393
59.9%
Derived
—
14,434
23,975 extrapolated
60.2%
Derived
—
Sources and methods
Audited cycles (2016, 2018, 2020, 2022, 2024) count total general-election participants against the same-year CVAP special tabulation, each cell carrying its own numerator and denominator quality grade. Derived cycles (2004, 2008, 2012) come from the certified presidential returns on this page over the ACS 5-year CVAP series, so they measure presidential votes cast rather than ballots — a floor on participation. Where a derived cycle predates the ACS its denominator is extrapolated rather than read, and says so on its own line below. They are shown for the longer arc and are excluded from the drop-off, excess-drop-off, and 2026 scenario figures above.
2024: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 323/229.
2022: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 322/184.
2020: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 321/4.
2018: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 320/139.
2016: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 319/133.
2012 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
2008 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
2004 (derived): Certified presidential returns · extrapolated CVAP denominator; presidential votes cast — a floor on participation, not a ballot count; 2004 predates the ACS, so the denominator is a linear back-extrapolation from the 2008 and 2012 CVAP values, not a read figure.
presidential history
Party record book
Lewiston, ID · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
2004–2024 · 6 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Barack Obama2008
39.8%
5,815 votes · R+18.2
Runner-up · Barack Obama, 2012 · 37.2%
Republican
Donald Trump2020
69.0%
11,120 votes · R+40.7
Runner-up · Donald Trump, 2024 · 68.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
5,815votes
39.8% of the vote · R+18.2
Runner-up · John Kerry, 2004 · 5,251 votes
Republican
Donald Trump2020
11,120votes
69.0% of the vote · R+40.7
Runner-up · Donald Trump, 2024 · 10,602 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
John Kerry2004
−23.8pts D vs U.S.
Place R+26.3 · U.S. R+2.5
Runner-up · Barack Obama, 2008 · −25.5 pts
Republican
Donald Trump2020
+45.2pts R vs U.S.
Place R+40.7 · U.S. D+4.5
Runner-up · Donald Trump, 2024 · +37.9 pts
presidential primaries
Nominating contests
Lewiston · which candidate this place backed 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. The figures below are Nez Perce County, Idaho, the county containing Lewiston — Lewiston’s own primary vote sits inside those totals and is not separately reported.
Presidential nominating contests in Lewiston, by party and cycle.
○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.
Lewiston sits where the Snake and Clearwater rivers meet, anchoring a regional economy tied to grain shipment and timber. Its blue-collar workforce gives it a slightly more competitive margin than the surrounding rural Idaho counties.
Across the recorded series it reached a Republican high of 40.7 points in 2020. Between 2020 and 2024 the city moved 1.4 points toward the Democratic candidate; the 2024 margin was 39.3 points.
A population of 34,651, a 89% non-Hispanic-white share, and a median household income of $72,197 describe the city. The city's voting pattern over the last decade is most similar to that of Mount Vernon and Casper.
Akashic
Political twins — cities
The cities 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.
In 2024, Lewiston, Idaho voted Republican by 39.3 points (R+39.3), carried by the Republican candidate. Out of 15,507 votes cast, 4,502 went Democratic and 10,602 went Republican.
How many people live in Lewiston, Idaho?
Lewiston, Idaho has a population of 34,651 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Lewiston, Idaho?
Median household income in Lewiston, Idaho is $72,197 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Lewiston, Idaho?
Akashic tracks 6 presidential elections in Lewiston, Idaho from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
