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U.S. Party Identification
Share of U.S. adults who identify with or lean toward each party, and independents who lean toward neither, %
Plays the chart through its history. Pauses are where the data set a record or moved most.
Source: Cooperative Election Study, Cumulative Common Content (Harvard Dataverse, CC0). Weighted shares of each year’s national sample; leaners counted with the party they lean toward. The remainder is not sure.
How Americans describe their own party loyalty each year, from the Cooperative Election Study, a large national survey released into the public domain. Independents who say they lean toward a party are counted with it.
What this chart reads
- Party Identification: Democrats incl. Leaners (CES)as “Democratic Party”latest 2025-12-31
- Party Identification: Republicans incl. Leaners (CES)as “Republican Party”latest 2025-12-31
- Party Identification: Independents, No Lean (CES)as “Independent, no lean”latest 2025-12-31
Sources
Party Identification: Democrats incl. Leaners (CES). Source: Cooperative Election Study, Cumulative CES Common Content (Kuriwaki 2026, https://doi.org/10.7910/DVN/II2DB6, Harvard Dataverse, V12), licensed CC0 1.0. Palanor tabulation of the weighted shares (variable weight) for each survey year.
Party Identification: Republicans incl. Leaners (CES). Source: Cooperative Election Study, Cumulative CES Common Content (Kuriwaki 2026, https://doi.org/10.7910/DVN/II2DB6, Harvard Dataverse, V12), licensed CC0 1.0. Palanor tabulation of the weighted shares (variable weight) for each survey year.
Party Identification: Independents, No Lean (CES). Source: Cooperative Election Study, Cumulative CES Common Content (Kuriwaki 2026, https://doi.org/10.7910/DVN/II2DB6, Harvard Dataverse, V12), licensed CC0 1.0. Palanor tabulation of the weighted shares (variable weight) for each survey year.
Charts are drawn from Palanor's signal library and recomputed from source data on every view. Transformations (changes, indexing, year-on-year rates) are Palanor's.