Lewis and Clark County, Montana
AkashicLewis and Clark County, MTTrumpR+5.7
2024 precinct map of Lewis and Clark CountyPrecinct-level 2024 presidential results for Lewis and Clark County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Donald Trump ✓Republican | 51.1% | 21,479 |
|---|---|---|
| Kamala HarrisDemocratic | 45.4% | 19,085 |
| Robert F Kennedy Jr.We The People | 2.2% | 929 |
Harris +50Trump +50
32 precincts · 42,023 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 45.4%Harris19,085 | 51.1%Trump21,479 | 2.2%Kennedy929 | 42,023 | ||
| R | 46.7%Biden19,743 | 50.7%Trump21,409 | 2.6%Jorgensen1,113 | 42,265 | ||
| R | 41.0%Clinton14,478 | 47.9%Trump16,895 | 6.3%Johnson2,210 | 35,296 | ||
| R | 46.9%Obama15,620 | 50.4%Romney16,803 | 2.7%Johnson895 | 33,318 | ||
| D | 52.1%Obama17,114 | 45.5%McCain14,966 | 2.4%Paul793 | 32,873 | ||
| R | 42.6%Kerry12,717 | 55.3%Bush16,494 | 2.1%Nader632 | 29,843 | ||
| R | 36.6%Gore9,982 | 55.3%Bush15,091 | 6.0%Nader1,645 | 27,269 | ||
| R | 43.5%Clinton11,535 | 43.9%Dole11,665 | 11.8%Perot3,140 | 26,547 | ||
| D | 42.5%Clinton11,117 | 35.7%Bush9,351 | 21.2%Perot5,560 | 26,179 | ||
| D | 51.1%Dukakis11,932 | 46.9%Bush10,946 | 2.0%Paul456 | 23,334 | ||
| R | 38.8%Mondale8,768 | 60.0%Reagan13,569 | 1.3%Bergland289 | 22,626 | ||
| R | 32.1%Carter6,815 | 57.2%Reagan12,128 | 10.7%Anderson2,269 | 21,212 | ||
| R | 43.8%Carter8,118 | 54.8%Ford10,155 | 1.3%Anderson244 | 18,517 | ||
| R | 35.1%McGovern6,081 | 61.9%Nixon10,719 | 3.0%Schmitz516 | 17,316 | ||
| R | 38.1%Humphrey5,379 | 56.5%Nixon7,979 | 5.4%Wallace757 | 14,115 | ||
| D | 54.8%Johnson7,506 | 45.0%Goldwater6,155 | 0.2%Hass26 | 13,687 | ||
| R | 45.2%Kennedy6,008 | 54.6%Nixon7,260 | 0.1%Byrd17 | 13,285 | ||
| R | 35.6%Stevenson4,397 | 64.4%Eisenhower7,959 | 0.0% | 12,356 | ||
| R | 37.3%Stevenson4,563 | 62.6%Eisenhower7,663 | 0.2%Hallinan20 | 12,246 | ||
| R | 46.6%Truman4,745 | 50.8%Dewey5,174 | 2.5%Thurmond257 | 10,176 | ||
| D | 51.2%Roosevelt4,737 | 48.4%Dewey4,482 | 0.4%Thomas39 | 9,258 | ||
| D | 54.4%Roosevelt5,814 | 44.6%Willkie4,762 | 1.0%Thomas107 | 10,683 | ||
| D | 64.3%Roosevelt5,614 | 33.8%Landon2,951 | 1.8%Lemke160 | 8,725 | ||
| D | 54.8%Roosevelt4,714 | 42.7%Hoover3,671 | 2.5%Thomas211 | 8,596 | ||
| R | 42.3%Smith3,278 | 57.3%Hoover4,441 | 0.3%Thomas25 | 7,744 | ||
| R | 27.2%Davis1,869 | 49.9%Coolidge3,433 | 22.9%La Follette1,573 | 6,875 | ||
| R | 34.9%Cox2,413 | 62.9%Harding4,348 | 2.2%Debs152 | 6,913 | ||
| D | 54.5%Wilson4,337 | 43.0%Hughes3,423 | 2.5%Benson202 | 7,962 | ||
| O | 34.7%Wilson1,505 | 24.5%Taft1,062 | 40.8%Roosevelt1,768 | 4,335 | ||
| D | 46.5%Bryan2,062 | 45.9%Taft2,033 | 7.6%Debs335 | 4,430 | ||
| R | 33.6%Parker1,543 | 54.6%Roosevelt2,505 | 11.8%Debs540 | 4,588 | ||
| D | 56.8%Bryan2,763 | 42.0%McKinley2,043 | 1.1%Woolley55 | 4,861 | ||
| D | 78.5%Bryan3,939 | 21.1%McKinley1,057 | 0.4%Palmer20 | 5,016 | ||
| D | 39.6%Cleveland2,093 | 38.1%Harrison2,014 | 22.2%Weaver1,173 | 5,280 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +1.5% |
| 1896 | +57.5% |
| 1900 | +14.8% |
| 1904 | −21.0% |
| 1908 | +0.7% |
| 1912 | +10.2% |
| 1916 | +11.5% |
| 1920 | −28.0% |
| 1924 | −22.7% |
| 1928 | −15.0% |
| 1932 | +12.1% |
| 1936 | +30.5% |
| 1940 | +9.8% |
| 1944 | +2.8% |
| 1948 | −4.2% |
| 1952 | −25.3% |
| 1956 | −28.8% |
| 1960 | −9.4% |
| 1964 | +9.9% |
| 1968 | −18.4% |
| 1972 | −26.8% |
| 1976 | −11.0% |
| 1980 | −25.0% |
| 1984 | −21.2% |
| 1988 | +4.2% |
| 1992 | +6.7% |
| 1996 | −0.5% |
| 2000 | −18.7% |
| 2004 | −12.7% |
| 2008 | +6.5% |
| 2012 | −3.6% |
| 2016 | −6.8% |
| 2020 | −3.9% |
| 2024 | −5.7% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 45,342 |
| 2018 | 47,093 |
| 2020 | 50,238 |
| 2022 | 51,558 |
| 2024 | 53,766 |
Source: U.S. Election Assistance Commission (EAVS)
Home to Helena and a sizable state-government workforce, Lewis and Clark voted within single digits in several recent cycles before settling at R+5.7 in 2024 — a narrower margin than most Montana counties but a notable shift from its earlier swing-county status.
Across the recorded series it reached a Democratic high of 57.5 points in 1896 and a Republican high of 28.8 points in 1956. Between 2020 and 2024 the county moved 1.8 points toward the Republican candidate; the 2024 margin was 5.7 points.
A population of 73,464, a 89% non-Hispanic-white share, and a median household income of $78,237 describe the county. The county's voting pattern over the last decade is most similar to that of Albany County and Klickitat County.
Most similar counties
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.
Lewis and Clark County, Montana. Akashic. https://akashic.app/county/30049/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Lewis and Clark County
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Frequently asked questions
How did Lewis and Clark County, Montana vote in 2024?
In 2024, Lewis and Clark County, Montana voted Republican by 5.7 points (R+5.7), carried by the Republican candidate. Out of 42,023 votes cast, 19,085 went Democratic and 21,479 went Republican.
When did Lewis and Clark County, Montana last vote Democratic?
The most recent presidential election in which Lewis and Clark County, Montana voted Democratic was 2008.
How many people live in Lewis and Clark County, Montana?
Lewis and Clark County, Montana has a population of 73,464 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Lewis and Clark County, Montana?
Median household income in Lewis and Clark County, Montana is $78,237 — below the national median of $80,734. The Montana state median is $72,509.
What is the political history of Lewis and Clark County, Montana?
Akashic tracks 38 presidential elections in Lewis and Clark County, Montana from 1876 to 2024. Of those, 13 went Democratic and 20 went Republican.