Gov. Bill Ritter is opposing a first-in-the-nation proposal on Colorado ballots this fall that would define a fertilized egg as a person and potentially outlaw abortion.

In a news conference Tuesday, Ritter voiced his opposition to Amendment 48, which would change the state constitution.

The governor has also come out against other ballot measures, including a ban on affirmative action in state decisions and a ban on requiring workers to join a union.

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