For reporting, research, and civic work
Use CalBallot to investigate California ballot measures
CalBallot makes California ballot measures understandable and verifiable by connecting official records, voting rules, campaign money, results, and historical context in one searchable public resource.
Choose a starting point
Built for people who need to follow the evidence
Journalists
Establish the record quickly, find a revealing comparison, and trace it to a source.
Verify facts · Find context · Follow moneyResearchers
Explore a structured historical record with visible provenance and documented limits.
Define samples · Audit fields · Build studiesCivic organizations
Build voter information on a shared, neutral, and reusable factual foundation.
Check facts · Teach rules · Link sourcesGovernment and public affairs
Understand the ballot landscape before making legal, historical, or strategic claims.
Compare instruments · Check thresholds · Test analogiesLocal and statewide journalists
Follow the measure—not just the election-day headline
California ballot measures are reported in fragments. Qualification notices appear on government websites, campaign money lives in disclosure systems, passage rules vary by instrument, and historical results are scattered across state and county records. Reporting a single measure can require assembling several sources before the substantive work even begins.
CalBallot brings that foundation into one searchable environment. A reporter can establish jurisdiction, election year, passage threshold, official source, outcome, vote share, classification, and—where coverage exists—campaign-finance activity. Historical search supports better follow-up questions: Has this jurisdiction tried something similar? Do comparable bonds or taxes usually clear their legal threshold? When has majority support still produced a loss?
For matched statewide campaigns, finance records sit alongside results without pretending money predicts the vote. For emerging county registrar records, the project preserves official attribution and stable measure identity. The aim is to reduce repetitive assembly work while keeping primary sources central.
CalBallot helps you
- Verify foundational measure facts before deadline.
- Find historical comparisons worth reporting—and inspect their limits.
- Connect statewide campaign spending to the correct election cycle.
Scope: CalBallot supports primary-source reporting; it does not replace it or tell readers how to vote.
Browse and search measures →Academic and policy researchers
A structured view of California's ballot-measure history
California's initiative and local-measure systems offer an unusually rich record of direct democracy, but the underlying data come from archives, county offices, academic datasets, and campaign-finance disclosures with different naming and coding conventions. Longitudinal analysis begins with expensive normalization work.
CalBallot provides a consolidated layer across that fragmented record. Measures can be examined by year, geography, topic, instrument, passage rule, outcome, and vote share. The public JSON bundle supports independent analysis, while the site makes descriptive exploration possible before a researcher builds a custom environment.
Provenance and uncertainty are treated as data. Known source limitations remain documented; registrar-sourced thresholds are distinguished from aggregator-derived fields; and observed pass-rate differences are not presented as causal effects. The result is not a claim of a perfectly complete research dataset, but an inspectable foundation for defining samples and finding the records that need closer validation.
CalBallot helps you
- Construct samples across time, geography, instrument, and outcome.
- Audit source coverage and identify anomalous or uncertain fields.
- Move from descriptive patterns to a defensible research design.
Scope: Coverage and classification vary by period and source; the public bundle is a research starting point, not a causal result.
Access the public data →Civic-information organizations
Build voter information on a shared, verifiable foundation
Voters often meet ballot measures as legal text, campaign advertising, or recommendations from organizations they already trust. The underlying facts—who placed the measure on the ballot, what rule applies, where the official record lives, and what came before—are harder to assemble.
Civic organizations repeat that foundational work for guides, classrooms, workshops, explainers, and community forums. CalBallot makes more of it reusable by organizing statewide propositions and historical local contests into a common structure. Rather than offering endorsements, it provides factual scaffolding that other organizations can examine and adapt for their audiences.
The distinction between fact and interpretation is deliberate. An authoritative threshold or official link can be displayed when provenance is clear. A document's presence does not justify inventing an argument, fiscal claim, or endorsement. That discipline makes CalBallot useful beneath public education without asking partners to adopt a political position.
CalBallot helps you
- Fact-check voter guides and educational material.
- Explain why different measures face different passage rules.
- Link public-facing material back to inspectable records.
Scope: CalBallot complements official election tools; it does not determine the complete ballot for a street address.
Explore the public resource →Government, campaign, and public-affairs professionals
Understand the landscape before making strategic claims
Ballot-measure work often begins with deceptively simple questions. Has this jurisdiction tried something similar? Is majority support sufficient? How have comparable instruments performed? Which historical analogy is actually defensible? Reliable answers may be scattered across county records, statewide archives, research datasets, and disclosure systems.
CalBallot reduces that initial research burden by organizing measures around geography, year, type, topic, legal threshold, outcome, and vote share. That structure helps separate genuinely comparable measures from superficial analogies. A school bond and a general tax may both concern public revenue while operating under different legal rules and electoral conditions.
For statewide campaigns, matched finance context supports an evidence-based view of support and opposition activity without treating the better-funded side as automatically favored. Government users can also use cross-jurisdiction search to spot repeated instruments, naming inconsistencies, and disagreements between official records and historical aggregators.
CalBallot helps you
- Compare measures under the correct legal and institutional rules.
- Test whether a strategic analogy survives contact with the record.
- Identify source discrepancies that warrant official verification.
Scope: CalBallot is not a forecast, voter file, persuasion platform, or substitute for legal review.
Compare ballot measures →The role CalBallot can play
A public-facing voter resource with an expert-grade research backbone.
The historical archive contains thousands of local measures across California. Current-election registrar coverage is narrower: this build captures official records from 2 of 58 counties (49 measures) for 2026. CalBallot is not an address-based ballot finder.