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Election Results Common Data Format Specification Revision 2.0



John P. Wack


This publication describes an election results common data format specification for pre-election setup information and post-election results reporting. It contains a UML model of the election data and an XML format derived from the UML model. It also contains background information regarding how geopolitical geography is structured and used in the model and schema. The XML format is comprehensive and at the same time very flexible, able to accommodate election scenarios used throughout the U.S. It is part of a series of planned common data format specifications for voting equipment.
Special Publication (NIST SP) - 1500-100 rev 2
Report Number
1500-100 rev 2


Ballot, common data format, contest, district, election results, jurisdiction, overvote, political office, political party, precinct, referendum, undervote, voting.


Wack, J. (2019), Election Results Common Data Format Specification Revision 2.0, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 24, 2024)
Created December 3, 2019, Updated February 3, 2020