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Party Registration in Six States
Share of registered voters enrolled in each party, six party-registration states combined, %
Plays the chart through its history. Pauses are where the data set a record or moved most.
California, New Jersey, Oregon, Rhode Island, New Hampshire and South Dakota, each state’s last report of the year, summed. Not a national figure. Sources: the six state election offices.
How voters are enrolling by party in six states that register by party and publish the counts, combined so that one state’s list clean-up moves the total less. Registration changes slowly and is a check on surveys of party identification.
What this chart reads
- Six Party-Registration States: Democratic Party Share of Registered Votersas “Democratic Party”latest 2026-10-09
- Six Party-Registration States: Republican Party Share of Registered Votersas “Republican Party”latest 2026-10-09
- Six Party-Registration States: Unaffiliated and Other-Party Share of Registered Votersas “Unaffiliated and other parties”latest 2026-10-09
Sources
Six Party-Registration States: Democratic Party Share of Registered Voters. Source: Palanor calculation from the six state series (politics.registration.<state>.*); see each for its source and terms.
Six Party-Registration States: Republican Party Share of Registered Voters. Source: Palanor calculation from the six state series (politics.registration.<state>.*); see each for its source and terms.
Six Party-Registration States: Unaffiliated and Other-Party Share of Registered Voters. Source: Palanor calculation from the six state series (politics.registration.<state>.*); see each for its source and terms.
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.