Presumptive Green Party nominee Jill Stein has selected Ajamu Baraka as her running mate.

Baraka is the founding executive director of the U.S. Human Rights Network and a Black Liberation movement activist. The Stein-Baraka ticket will likely be formalized at the Green Party's convention in Houston later this week.

"I am honored and excited to announce that my running mate in the 2016 presidential election will be Ajamu Baraka, activist, writer, intellectual and organizer with a powerful voice, vision, and lifelong commitment to building true political revolution," Stein said in a statement. "Ajamu Baraka is a powerful, eloquent spokesperson for the transformative, radical agenda whose time has come — an agenda of economic, social, racial, gender, climate, indigenous and immigrant justice."

Stein, who rallied her troops outside the Democratic convention in Philadelphia last week, was thought to be considering Nina Turner, a former Ohio state senator and Bernie Sanders campaign surrogate. Turner reportedly turned down the position, and Stein indicated that the falling out resulted because Turner "is still committed to try to save the soul of the Democratic Party."

The Green Party's impact on the 2016 election will likely be negligible, but her appeal to Democrats who formerly supported Sanders could damage Hillary Clinton's standing in the polls.