Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., waves as she takes the stage at a union rally to honor the legacy of Martin Luther King Jr., in New York Monday, Jan. 14, 2008. From left, Rev. Clinton Miller; Hazel Dukes, president of the New York NAACP; Clinton; Bishop Eric Figueroa. (AP) Democratic presidential hopeful Sen. Barack Obama, D-Ill., left, greets supporters at ..