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Indicators / United States / Presidential vote

Third-party and write-in share

% of votes · MIT Election Data and Science Lab, County Presidential Election Returns 2000–2024, via electiondata.dev · every presidential vote not for the Democratic or Republican candidate

United States, 2024
1.9% of votes
States with a figure
51 2024
Counties with a figure
3,104 2024
Third-party and write-in share, United States, 2000–20241.9% of votes in 2024, against 3.7% of votes in 2000 (−1.9 pts).
1.02.03.04.05.06.020002005201020152020
Indicator: Third-party and write-in share, % of votes, yearly (every presidential vote not for the Democratic or Republican candidate); MEDSL county returns, votes for neither major-party candidate / all votesSource: MIT Election Data and Science Lab, County Presidential Election Returns 2000–2024 (CC0), via electiondata.dev county-president, version 2026-10-26.a942e8daa5
Show the numbers (7 rows)
YearUnited States
20241.9
20201.9
20165.6
20122.0
20081.4
20041.2
20003.7

Every state, 2024

RankStateThird-party and write-in share4 yr8 yr12 yr
1Vermont4.7% of votes+0.6 pts−8.3 pts+2.3 pts
2Alaska4.0% of votes+0.2 pts−8.1 pts−0.3 pts
3Oregon3.8% of votes+0.6 pts−7.1 pts+0.2 pts
4Washington3.8% of votes+0.5 pts−3.9 pts+1.2 pts
5Maryland3.3% of votes+0.8 pts−2.5 pts+1.2 pts
6District of Columbia3.3% of votes+0.8 pts−1.8 pts+1.4 pts
7California3.2% of votes+1.0 pts−3.5 pts+0.5 pts
8Montana3.1% of votes+0.6 pts−4.9 pts+0.2 pts
9Utah2.8% of votes−1.8 pts−24.2 pts+0.4 pts
10Massachusetts2.8% of votes−0.2 pts−3.0 pts+0.9 pts
11Idaho2.7% of votes−0.3 pts−10.5 pts−0.1 pts
12Rhode Island2.7% of votes+0.7 pts−4.0 pts+0.6 pts
13Colorado2.7% of votes0.0 pts−5.9 pts+0.3 pts
14Wyoming2.6% of votes−1.6 pts−7.4 pts−1.0 pts
15North Dakota2.5% of votes−0.6 pts−7.3 pts−0.5 pts
16Minnesota2.4% of votes+0.1 pts−6.2 pts0.0 pts
17Iowa2.4% of votes+0.6 pts−4.7 pts+0.5 pts
18South Dakota2.3% of votes−0.3 pts−4.4 pts+0.1 pts
19New Mexico2.3% of votes+0.1 pts−9.4 pts−1.9 pts
20Arkansas2.2% of votes−0.6 pts−3.5 pts−0.3 pts
21Illinois2.2% of votes+0.2 pts−3.6 pts+0.5 pts
22Maine2.1% of votes−1.8 pts−5.2 pts−0.6 pts
23New Jersey2.0% of votes+0.7 pts−1.2 pts+0.9 pts
24Michigan2.0% of votes+0.4 pts−3.3 pts+0.9 pts
25Oklahoma1.9% of votes−0.4 pts−3.8 pts+1.9 pts
26Hawaii1.9% of votes−0.1 pts−5.8 pts+0.3 pts
27Nevada1.9% of votes−0.4 pts−4.7 pts−0.1 pts
28West Virginia1.9% of votes+0.2 pts−3.0 pts−0.3 pts
29Kansas1.8% of votes−0.4 pts−5.5 pts−0.5 pts
30Indiana1.8% of votes−0.2 pts−3.5 pts−0.2 pts
31Arizona1.8% of votes+0.2 pts−5.6 pts0.0 pts
32Connecticut1.7% of votes+0.2 pts−3.0 pts+0.5 pts
33Wisconsin1.7% of votes0.0 pts−4.7 pts+0.4 pts
34Virginia1.6% of votes−0.3 pts−4.3 pts0.0 pts
35Kentucky1.6% of votes−0.1 pts−3.2 pts−0.1 pts
36Louisiana1.6% of votes−0.1 pts−1.9 pts−0.1 pts
37North Carolina1.5% of votes0.0 pts−2.5 pts+0.2 pts
38Delaware1.5% of votes+0.1 pts−3.5 pts+0.1 pts
39New Hampshire1.5% of votes−0.2 pts−5.2 pts−0.1 pts
40Missouri1.4% of votes−0.4 pts−3.6 pts−0.4 pts
41South Carolina1.4% of votes0.0 pts−3.0 pts+0.1 pts
42Texas1.4% of votes−0.1 pts−3.1 pts0.0 pts
43Tennessee1.3% of votes−0.6 pts−3.2 pts−0.1 pts
44Alabama1.3% of votes−0.1 pts−2.2 pts+0.4 pts
45Nebraska1.3% of votes−0.8 pts−6.3 pts−0.9 pts
46Mississippi1.1% of votes−0.2 pts−0.8 pts+0.2 pts
47Pennsylvania1.0% of votes−0.2 pts−2.6 pts−0.3 pts
48Ohio0.9% of votes−0.6 pts−3.8 pts−0.7 pts
49Florida0.9% of votes0.0 pts−2.2 pts+0.1 pts
50New York0.8% of votes−1.4 pts−3.7 pts−6.5 pts
51Georgia0.7% of votes−0.5 pts−2.8 pts−0.5 pts

Rank 1 is the highest value. States are the 50 states, DC, Puerto Rico and the Virgin Islands where they have a figure.

Highest and lowest counties, 2024

HighestStateThird-party and write-in share
Essex CountyVermont6.4% of votes
Issaquena CountyMississippi6.3% of votes
Lee CountySouth Carolina6.1% of votes
Caledonia CountyVermont5.4% of votes
Orange CountyVermont5.3% of votes
Adams CountyWisconsin5.2% of votes
Washington CountyVermont5.2% of votes
Addison CountyVermont4.9% of votes
Windham CountyVermont4.8% of votes
Blaine CountyMontana4.8% of votes
LowestStateThird-party and write-in share
Grant CountyNebraska0.0% of votes
Keya Paha CountyNebraska0.0% of votes
Harding CountyNew Mexico0.0% of votes
Wyoming CountyNew York0.0% of votes
Collingsworth CountyTexas0.0% of votes
King CountyTexas0.0% of votes
Terrell CountyTexas0.0% of votes
Early CountyGeorgia0.1% of votes
Lewis CountyNew York0.1% of votes
Seminole CountyGeorgia0.1% of votes

Every county's figure is on its own page, in its profile table, with its rank among all counties and within its state.

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/us-indicators/us-third-party.json

Every place from electiondata.dev (live, no key; MIT Election Data and Science Lab data, this exact version):

curl "https://api.electiondata.dev/v1/county-president@2026-10-26.a942e8daa5/download/county-president.parquet"

Open the JSON

Source

  • MIT Election Data and Science Lab, County Presidential Election Returns 2000–2024 (CC0): MEDSL county returns, votes for neither major-party candidate / all votes.
  • Read through electiondata.dev, dataset county-president, version 2026-10-26.a942e8daa5; its 1 input files from the MIT Election Data and Science Lab are named with their sha256 in this page's data, and the site's checks recompute every figure from them.
  • The margin is the Republican candidate's votes minus the Democratic candidate's, as a share of every presidential vote cast in the county, third parties and write-ins included. A state is the sum of every reporting unit MEDSL lists in it, so Alaska (which reports by state house district, not county) has a state figure but no county figures, and Connecticut's former counties count toward the state. The changes compare with the elections 4, 8 and 12 years before. MEDSL's file is served by Harvard Dataverse after a short form, so the site's checks read a copy whose MD5 Dataverse publishes.
  • Every four years, when MEDSL publishes the certified county returns.
  • Built 2026-10-27.