BUCKLEY v. VALEO 1 Per Curiam tions on political contributions and expenditures that apply broadly to all phases of and all participants in the election process. The major contribution and expenditure limitations in the Act prohibit individuals from contributirg more than $25,000 in a single year or more than $1,000 to any single candidate for an election campaign " and from spending more than $1,000 a year "relative to a clearly identified candidate." 13 Other provisions restrict a candidate's use of personal and family resources in his campaign " and limit the overall amornt that can be spent by a candidate in campaigning for federal office." The constitutional power of Congress to regulate federal elections is well established and is not questioned by any of the parties in this case.' Thus, the critical con12See 18 U. S. C. §§ 608 (b) (1), (3) (1970 ed., Supp. IV), set forth in the Appendix, infra, at 189. An organization registered as a political committee for not less than six months which has received contributions from at least 50 persons and made contributions to at least five candidates may give up to $5,000 to any candidate for any election. 18 U. S. C. § 608 (b) (2) (1970 ed., Supp. IV), set forth in the Appendix, infra, at 189. Other groups are limited to making contributions of $1,000 per candidate per election. "1See 18 U. S. C. § 608 (e) (1970 ed., Supp. IV), set forth in the Appendix, infra, at 193-194. 14 See 18 U. S. C. § 608 (a) (1970 ed., Supp. IV), set forth in the Appendix, infra, at 187-189. 1 See 18 U. S. C. § 608 (c) (1970 ed., Supp. IV), set forth in the Appendix, infra, at 190-192. 16 Article I, § 4, of the Constitution grants Congress the power to regulate elections of members of the Senate and House of Representatives. See Smiley v. Holm, 285 U. S. 355 (1932); Ex parte Yarbrough, 110 U. S. 651 (1884). Although the Court at one time indicated that party primary contests were not "elections" within the meaning of Art. I, § 4, Newberry v. United States, 256 U. S. 232 (1921), it later held that primary elections were within the Constitution's grant of authority to Congress. United States v.

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