Auditing and Election Data Formats

Post-election Vote Tabulation Audits

Growing momentum behind good audits

Risk-limiting audits

Evidence-Based Elections

Data requirements

Ballot-level audit data

Note volume of data e.g. Los Angeles County:

We need some real examples of EML 440 and 460, but I'd guess many gigabytes per Votes message (EML 460), even compressed

Consider various "binary XML" formats like EXI (Efficient XML Interchange), Fast Infoset.

Or a customized binary format which encodes ballot id, ballot style, and one bit per choice, along with a way to transform it to and from EML 460.

State-level audits