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Risk Limiting Audit

The risk-limiting audit is a procedure that provides strong statistical evidence that the election outcome is correct, or has a high probability of correcting an outcome that wouldn't match a full hand count of the ballots. The audit itself requires human beings to examine and verify more ballots in close contests and fewer ballots in contests with wider margins.

Although the risk-limiting audit is not required to be performed, Orange County is voluntarily conducting a pilot of a risk limiting audit in order to continually improve its auditing procedures.

Press Release - Orange County, CA Elections to Conduct Risk Limiting Audit of Presidential Primary Election Results

Risk Limiting Audit Results
The final results of the audit is posted here. 
View the final results

Risk Limiting Audit Progress
We will be posting the results and progress of the risk limiting audit process.
View risk limiting audit progress

Risk Limiting Audit Files for Download
We will be making files used to conduct the risk limiting audit available for download.
View files available for download

View the Random Seed
The random seed is generated by rolling dice, and is used to determine the random sequence of ballots that will be audited. 
View the Random Seed

View Live Streaming Video of the Risk Limiting Audit
We will be broadcasting the risk limiting audit.
View the live streaming video

Risk Limiting Audit Hours of Operation
The audit will be performed at the Registrar of Voters office from 8:00 a.m. to 8:00 p.m. until the audit is complete.