Question

Which u.s. supreme court case argued that the primary election was "in no real sense part of the manner of holding the election"? it cleared the way for southern states to discriminate against african americans?

Answer 1

Answer is: Newberry v. United States.
Newberry v. United States, brought in 1921, was decision by the United States Supreme Court which decided that the United States Constitution did not grant the United States Congress the authority to regulate political party primaries or nomination processes.