OCTOBER TERM, 1961.
Opinion of the Court.
369 U. S.
"discrimination is sufficiently shown, the right -k relief
under the equal protection clause is not diminished by
the fact that the discrimination relates to political rights."
Snowden v. Hughes, 321 U. S. 1, 11. To show why we
reject the argument based on the Guaranty Clause, we
must examine the authorities under it. But because there
appears to be some uncertainty as to.why those cases did
present political questions, and specifically as to whether
this apportionment case is like those cases, we deem it
necessary first to consider the contours of the "political
question" doctrine.
Our discussion, even at the price of 'extending this
opinion, requires review of a number of political question
cases, in order to expose the attributes of the doctrineattributes which, in various settings, diverge, combine,
appear, and disappear in seeming disorderliness. Since
that review is undertaken solely to demonstrate that
neither singly nor collectively do these cases support a
conclusion that this apportionment case is nonjusticiable,
we of course do not explore their implications in other
contexts. That review reveals that in the Guaranty
Clause cases and in the other "political question" cases,
it is the relationship between the judiciary and the
coordinate branches of the Federal Government, and not
the federal judiciary's relationship to the States, which
gives rise to the "political question."
We have said that "In determining whether a question
falls within [the political question] category, the approriateness under our system of government of attributing
finality to the action of the political departments and also
the lack of satisfactory criteria for a judicial determination
are dominant considerations." Coleman v. Miller, 307
U. S. 433, 454-455. The nonjusticiability of a political question is primarily a function of the separation
of powers. Much confusion results from the capacity of
the "political question" label to obscure the need for