To clarify my point, take a look at the Court's decision last year in Lance v. Coffman, which denied standing to Colorado citizens to challenge Congressional districting. It is precisely on point. Here's a quote:
"[A] plaintiff raising only a generally available grievance about government - claiming only harm to his and every other citizen's interest in proper application of the Constitution and laws, and seeking relief that no more directly and tangibly benefits him than it does the public at large - does not state an Article III case or controversy."
Berg isn’t raising a argument with GOVERNMENT. He is raising a problem with the PARTY who he is a member of. That gives him STANDING.
Berg was a Deputy Attorney General of the state. He is a very experienced trial lawyer. Standing is not something he just missed.