Former President Bill Clinton will headline a voter drive Saturday at a metro Atlanta high school as his wife stakes her campaign for the White House on turning out minority voters across the South.

Clinton is set to speak at 2 p.m. at North Clayton High School for Hillary Clinton's presidential bid, part of a spate of recent appearances where he's sharpened his attacks on Vermont Sen. Bernie Sanders.

At events in New Hampshire, the former president mocked Sanders attacks against a "mythical establishment" and tried to remind the state's residents of their long relationship with the Clintons. Bill Clinton declared himself the "comeback kid" after a surprising second-place finish there in 1992, and his wife won a come-from-behind victory in New Hampshire in 2008.

Yet the state abandoned the Clintons on Tuesday and delivered Sanders a whopping 22-point victory, forcing the former secretary of state's campaign into a must-win situation in South Carolina on Feb. 27. She's relying on the state's heavily black Democratic electorate to fuel her to victory, though Sanders is trying to make new inroads to African-American communities.

Case in point: The Vermont senator is holding a rally on Tuesday at Morehouse College.