This page provides an up to date set of resources for those interested in learning more about Common Data Formats for Election Data.

Specifications

• Ballot Definition
• Cast Vote Records
• Election Event Logging
• Election Results Reporting
• microCDF
• Voter Records Interchange

Articles and summaries

• Common Data Formats for Election Systems Webinar
• Common Data Formats — What’s In Them For Legislators? Article
• Making Election Testing Faster, Cheaper and More Transparent Article
• Speaking a common language Article
• CDF Workshop Presentations Presentation

White papers and tooling

This section provides links to explanatory white papers and tooling supporting the development, validation and use of common data formats. Some tooling was created for specific common data formats, and in that case, appears under its heading.

• CdfTools Tool
• CdfConverter Tool
• Gap Analysis for Key Interoperability Scenarios in Election Technology Whitepaper
• Model Driven Architecture Explainer Whitepaper
• Recommendations for Voting System Interoperability Whitepaper
• Relational Schemas from CDFs Whitepaper
• Subset Schema Presentation
• Subset Schema Whitepaper
• Validating Common Data Format Implementations Webinar

Election Results Reporting

• Google validation tool Tool XML
• Schematron ruleset Tool XML

Cast Vote Records

• Cast Vote Record (CVR) Examples Whitepaper
• Ballot Marking Prototype Prototype
• Schematron ruleset Tool XML

Voter Records Interchange

• Voter Records Interchange Webinar Webinar
• Web API prototype Prototype
• Additional use-cases and examples Tool Whitepaper

JSON Specific

• Semval Tool

XML Specific

• Schematron rulesets Whitepaper
• CDFs form the ground up: XML Fundamentals Webinar
• XML Editor tool

Mailing List

Hilton Roscoe hosts a mailing list for those interested in implementing the Common Data Formats. Topics include:

• Implementation guidance
• Tooling for validation and conformance
• Testing and certification concerns
• Handling large CDF datafiles
• Transformation between XML and JSON
• Working with XML and JSON Schemas

Please visit this page or send an email to cdf-implementation+subscribe@hiltonroscoe.com to subscribe.

Thanks to Democracy Fund for supporting much of this work. Contact John Dziurlaj with questions or comments.