Colorado voters in November will decide whether to make abortion a state constitutional right after the Colorado Secretary of State’s Office announced Friday that backers of a ballot initiative had gathered enough signatures. Advocates for the measure turned in 159,930 valid signatures last month — more than enough to place the question on the ballot, according to the state agency. The ballot measure, if approved by 55% of voters, would prohibit state and local governments from outlawing or impeding access to abortions.