BUCKLEY v. VALEO 1 Per Curiam dates for office is essential, for the identities of those who are elected will inevitably shape the course that we follow as a nation. As the Court observed in Monitor Patriot Co. v. Roy, 401 U. S. 265, 272 (1971), "it can hardly be doubted that the constitutional guarantee has its fullest and most urgent application precisely to the conduct of campaigns for political office." The First Amendment protects political association as well as political expression. The constitutional right of association explicated in NAACP v. Alabama, 357 U. S. 449, 460 (1958), stemmed from the Court's recognition that "[e]ffective advocacy of both public and private points of view, particularly controversial ones, is undeniably enhanced by group association." Subsequent decisions have made clear that the First and Fourteenth Amendments guarantee" 'freedom to associate with others for the common advancement of political beliefs and ideas,' " a freedom that encompasses " '[lt]he right to associate with the political party of one's choice.'" Kusper v. Pontikes, 414 U. S. 51, 56, 57 (1973), quoted in Cousins v. Wigoda, 419 U. S. 477, 487 (1975). It is with these principles in mind that we consider the primary contentions of the parties with respect to the Act's limitations upon the giving and spending of money in political campaigns. Those conflicting contentions could not more sharply define the basic issues before us. Appellees contend that what the Act regulates is conduct, and that its effect on speech and association is incidental at most. Appellants respond that contributions and expenditures are at the very core of political speech, and that the Act's limitations thus constitute restraints on First Amendment liberty that are both gross and direct. In upholding the constitutional validity of the Act's contribution and expenditure provisions on the ground

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