Detractors of American voting, driven by a cult leader who as president was inimical to democracy and as ex-president is a sworn enemy of it, have gone on the attack in Colorado in the form of proposed voting restrictions, threats against the secretary of state and county election officials, an election-system security breach in the Western Slope’s biggest county, the refusal by leaders of the Republican party to acknowledge President Joe Biden won in November, and organized efforts to instill doubt about election integrity.