Singer Jason Mraz and Chelsea Clinton are urging North Carolinians to vote against Amendment One, the North Carolina May 8 ballot question which would bar the state from recognizing the relationships of gay and lesbian couples with marriage, civil unions and possibly domestic partnerships.

“Yo North Carolina!” Mraz tweeted to his nearly 3.5 million followers. “On May 8th, Vote AGAINST Amendment 1. It's anti-gay, and takes away benefits from committed couples. Boo!”

In March, the 34-year-old Mraz recorded a video for the Human Rights Campaign's (HRC) Americans for Marriage Equality campaign.

“I sing songs about love. And just as people have a right to chose to listen to songs about love, I believe that people have a right to marry the person they love,” he said in the 45-second video.

In a statement released to, Clinton said she believes “that everyone must stand up for what is right, whenever possible, wherever possible.”

“I also believe that when the civil rights of any one American or group of Americans in one place are questioned, all Americans, everywhere, should care that the answer is the right one. Those are lessons I learned at a young age from my parents and they are guiding my principles in life.”

“That is why I am joining you in opposing Amendment One in North Carolina. Amendment One unfairly targets women, children and families, gay and straight, who fall outside of the narrow definition of family articulated by those who drafted the legislation.”

Clinton joined her father, former President Bill Clinton, last year in calling on New York lawmakers to approve a gay marriage bill.

(Related: Nate Silver predicts North Carolina voters will OK gay marriage ban.)