(CNN) - Former President Bill Clinton voiced his opposition to an upcoming North Carolina ballot initiative to ban same-sex marriage, recording a robo call set to go out to half a million voters in the state on Monday.
“Hello, this is President Bill Clinton. I'm calling to urge you to vote against Amendment One on Tuesday May 8,” Clinton says in the recording.
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While North Carolina already bans same-sex marriage, the provision would officially stamp the policy defining marriage as the union of one man and one women as an amendment into the Constitution, making it the final state in the Southeast to add such a law regarding same-sex marriage.
Amendment One outlaws not only same-sex marriage but also civil unions and domestic partnerships of the same gender.
In Clinton’s robo call, he insists the passage of the law would have a damaging effect on the state’s reputation and economy.
“If it passes, it won't change North Carolina's law on marriage. What it will change is North Carolina's ability to keep good businesses, attract new jobs, and attract and keep talented entrepreneurs,” he says.
In the call, released by the advocacy group Protect NC Families, Clinton went on to say losing even one job as a result of the measure would be “too big of a risk.”
“So the real effect of the law is not to keep the traditional definition of marriage, you've already done that,” Clinton said. “The real effect of the law will be to hurt families and drive away jobs. North Carolina can do better.”
Clinton, who once opposed same-sex marriage, changed his personal position on the issue and made his decision public in 2009.
“I am no longer opposed to that," he said in an interview with CNN’s Anderson Cooper. "I think if people want to make commitments that last a lifetime, they ought to be able to do it."
He added, however, he still believes it's a decision that should be left to the states.
Other high-profile figures have weighed in on the debate, including famed evangelist Billy Graham, who endorsed the initiative last week.
The 93-year-old took out full-page ads in 14 North Carolina newspapers touting his support for the measure. On his website, he encourages churches to download a poster that bears his image and the message "Vote for Marriage May 8th."
“Watching the moral decline of our country causes me great concern," the pastor said in a statement on the Billy Graham Evangelistic Association website. "I believe the home and marriage is the foundation of our society and must be protected.”
- CNN Chief White House Correspondent Jessica Yellin and CNN Belief Blog co-editor Eric Marrapodi contributed to this report.