Risk-Limiting Audit - 2020 Presidential Primary Election

• The risk limit is 1% for comparison audits.
• 3/05/2020 - Notice of public meeting to establish the RLA random seed (PDF)
• Target contests for risk-limiting audits (XLSX)
• 3/13/2020 - Notice of random seed (PDF)
• County ballot manifest to CVR comparison (CSV)
• Contest IDs by county (CSV)
• Candidate vote totals summary (CSV)
• Candidate vote totals by county (CSV)
• Ballot manifest and CVR upload status (CSV)
• Ballot manifests for all counties

Comparison audit data and reports

Round #1 data

• Contest margin and contest CVR IDs (CSV)
• CVR to audit board interpretation comparison (CSV)
• Contests list (CSV)
• Adams County audit

Beginning in November 2017, Colorado election law requires counties to conduct a new type of post-election audit, called a risk-limiting audit or RLA. On August 11, 2017, the Secretary of State adopted Election Rule 25 to specify the manner in which RLAs must be conducted. This page of the Secretary of State’s website is devoted to information, data and materials regarding risk-limiting audits.

Colorado's risk-limiting audit - 27:21