opinion: Pee Curiam.
  Yesterday, July 6, 1972, the petitioners filed petitions for writs of certiorari to review judgments of the United States Court of Appeals for the District of Columbia Circuit in actions challenging the recommendations of the Credentials Committee of the 1972 Democratic National Convention regarding the seating of certain delegates to the convention that will meet three days hence.
  In No. 72-35, the Credentials Committee recommended unseating 59 uncommitted delegates from Illinois on the ground, among others, that they had been elected in violation of the “slate-making” guideline adopted by the Democratic Party in 1971. A complaint challenging the Credentials Committee action was dismissed by the District Court. The Court of Appeals on review rejected the contentions of the unseated delegates that the action of the Committee violated their rights under the Constition of the United States.
  In No. 72-34, the Credentials Committee recommended unseating 151 of 271 delegates from California committed by California law to Senator George McGovern under that State’s “winner-take-all” primary system. The Committee concluded that the winner-take-all system violated the mandate- of the 1968 Democratic National Convention calling for reform in the party delegate selection process, even though such primaries had not been explicitly prohibited by the rules adopted by the party in 1971 to implement that mandate. A complaint challenging the Credentials Committee action was dismissed by the District Court. On review the Court of Appeals concluded that the action of the Credentials Committee in this case violated the Constitution of the United States.
  Accompanying the petitions for certiorari were applications to stay the judgments of the Court of Appeals pending disposition of the petitions.
  The petitions for certiorari present novel questions of importance to the litigants and to the political system under which national political parties nominate candidates for office and vote on their policies and programs. The particular actions of the Credentials Committee on which the Court of Appeals ruled are recommendations that have yet to be submitted to the National Convention of the Democratic Party. Absent judicial intervention, the Convention could decide to accept or reject, or accept with modification, the proposals of its Credentials Committee.
  This Court is now asked to review these novel and important questions and to resolve them within the remaining days prior to the opening sessions of the convention now scheduled to be convened Monday, July 10, 1972.
  The Court concludes it cannot in this limited time give to these issues the consideration warranted for final decision on the merits; we therefore take no action on the petitions for certiorari at this time.
  The applications to stay the judgments of the Court of Appeals call for a weighing of three basic factors: (a) whether irreparable injury may occur absent a stay; (b) the probability that the Court of Appeals was in error in holding that the merits of these controversies were appropriate for decision by federal courts; and (c) the public interests that may be affected by the operation of the judgments of the Court of Appeals.
  Absent a stay, the mandate of the Court of Appeals denies to the Democratic National Convention its traditional power to pass on the credentials of the California delegates in question. The grant of a stay, on the other hand, will not foreclose the Convention’s giving the respective litigants in both cases the relief they sought in federal courts.
  We must also consider the absence of authority supporting the action of the Court of Appeals in intervening in the internal determinations of a national political party, on the eve of its convention, regarding the seating of delegates. No case is cited to us in which any federal court has undertaken to interject itself into the deliberative processes of a national political convention; no holding of this Court up to now gives support for judicial intervention in the circumstances presented here, involving as they do relationships of great delicacy that are essentially political in nature. Cf. Luther v. Borden, 7 How. 1 (1849). Judicial intervention in this area traditionally has been approached with great caution and restraint. See Irish v. Democratic-Farmer-Labor Party of Minnesota, 399 F. 2d 119 (CA8 1968), affirming 287 F. Supp. 794 (Minn. 1968), and cases cited; Lynch v. Torquato, 343 F. 2d 370 (CA3 1965); Smith v. State Exec. Comm. of Dem. Party of Ga., 288 F. Supp. 371 (ND Ga. 1968). Cf. Ray v. Blair, 343 U. S. 214 (1952). It has been understood since our national political parties first came into being as voluntary associations of individuals that the convention itself is the proper forum for determining intra-party disputes as to which delegates shall be seated. Thus, these cases involve claims of the power of the federal judiciary to review actions heretofore thought to lie in the control of political parties. Highly important questions are presented concerning justiciability, whether the action of the Credentials Committee is state action and, if so, the reach of the Due Process Clause in this unique context. Vital rights of association guaranteed by the Constitution are also involved. While the Court is unwilling to undertake final resolution of the important constitutional questions presented without full briefing and argument and adequate opportunity for deliberation, we entertain grave doubts as to the action taken by the Court of Appeals.
  In light of the availability of the convention as a forum to review the recommendations of the Credentials Committee, in which process the complaining parties might obtain the relief they have sought from the federal courts, the lack of precedent to support the extraordinary relief granted by the Court of Appeals, and the large public interest in allowing the political processes to function free from judicial supervision, we conclude the judgments of the Court of Appeals must be stayed.
  We recognize that a stay of the Court of Appeals’ judgments may well preclude any judicial review of the final action of the Democratic National Convention on the recommendation of its Credentials Committee. But, for nearly a century and a half the national political parties themselves have determined controversies regarding the seating of delegates to their conventions. If this system is to be altered by federal courts in the exercise of their extraordinary equity powers, it should not be done under the circumstances and time pressures surrounding the actions brought in the District Court, and the expedited review in the Court of Appeals and in this Court.
  The applications for stays of the judgments of the Court of Appeals are granted.
  Mr. Justice Brennan is of the view that in the limited time available the Court cannot give these difficult and important questions consideration adequate for their proper resolution. He therefore concurs in the grant of the stays pending action by the Court on the petitions for certiorari.
  Mr. Justice White would deny the applications for stays.
  This is not a case in which claims are made that injury arises from invidious discrimination based on race in a primary contest within a single State. Cf. Terry v. Adams, 345 U. S. 461 (1953); Smith v. Allwright, 321 U. S. 649 (1944).
  Argument was had and the ease decided in the District Court on July 3; the Court of Appeals entered its judgment July 5. Papers were filed here July 6.
choices: comity: civil rights comity: criminal procedure comity: First Amendment comity: habeas corpus comity: military comity: obscenity comity: privacy comity: miscellaneous comity primarily removal cases, civil procedure (cf. comity, criminal and First Amendment); deference to foreign judicial tribunals assessment of costs or damages: as part of a court order Federal Rules of Civil Procedure including Supreme Court Rules, application of the Federal Rules of Evidence, Federal Rules of Appellate Procedure in civil litigation, Circuit Court Rules, and state rules and admiralty rules judicial review of administrative agency's or administrative official's actions and procedures mootness (cf. standing to sue: live dispute) venue no merits: writ improvidently granted no merits: dismissed or affirmed for want of a substantial or properly presented federal question, or a nonsuit no merits: dismissed or affirmed for want of jurisdiction (cf. judicial administration: Supreme Court jurisdiction or authority on appeal from federal district courts or courts of appeals) no merits: adequate non-federal grounds for decision no merits: remand to determine basis of state or federal court decision (cf. judicial administration: state law) no merits: miscellaneous standing to sue: adversary parties standing to sue: direct injury standing to sue: legal injury standing to sue: personal injury standing to sue: justiciable question standing to sue: live dispute standing to sue: parens patriae standing standing to sue: statutory standing standing to sue: private or implied cause of action standing to sue: taxpayer's suit standing to sue: miscellaneous judicial administration: jurisdiction or authority of federal district courts or territorial courts judicial administration: jurisdiction or authority of federal courts of appeals judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from federal district courts or courts of appeals (cf. 753) judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from highest state court judicial administration: jurisdiction or authority of the Court of Claims judicial administration: Supreme Court's original jurisdiction judicial administration: review of non-final order judicial administration: change in state law (cf. no merits: remand to determine basis of state court decision) judicial administration: federal question (cf. no merits: dismissed for want of a substantial or properly presented federal question) judicial administration: ancillary or pendent jurisdiction judicial administration: extraordinary relief (e.g., mandamus, injunction) judicial administration: certification (cf. objection to reason for denial of certiorari or appeal) judicial administration: resolution of circuit conflict, or conflict between or among other courts judicial administration: objection to reason for denial of certiorari or appeal judicial administration: collateral estoppel or res judicata judicial administration: interpleader judicial administration: untimely filing judicial administration: Act of State doctrine judicial administration: miscellaneous Supreme Court's certiorari, writ of error, or appeals jurisdiction miscellaneous judicial power, especially diversity jurisdiction