- Dates, registration, ballots cast, turnout and source data for midterm primary and general elections in Los Angeles County between 1942 and 2016.
- Acquired via available data on the LA County Registrar/Recorder website
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Registered voters not available for elections between 1942 and 1958.
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Turnout figures not available for elections between 1942 and 1950; the 1954 midterm primary ; the 1958 midterm primary.
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Updated after the 2016 primary. Here as both a csv and xlsx file. Files are otherwise identical but Excel has the formulas.