Colorado's secretary of state orders recounts for state elections. A recount is required if the difference between the highest number of votes cast in that election and the next highest number of votes cast in that election contest is less than or equal to one-half of one percent of the highest vote cast. The recount must be completed within thirty days of the election.
A range of grounds can give rise to an election contest in Colorado, including candidate ineligibility, electoral illegality, or official error. For general election contests, the contestor must file a statement of intention to contest the election with the district court clerk within ten days of the issuance of the official survey of returns.