BUCKLEY v. VALEO I Per Curiam munication. A contribution serves as a general expression of support for the candidate and his views, but does not communicate the underlying basis for the support. The quantity of communication by the contributor does not increase perceptibly with the size of his contribution, since the expression rests solely on the undifferentiated, symbolic act of contributing. At most, the size of the contribution provides a very rough index of the intensity of the contributor's support for the candidate.2 2 A limitation on the amount of money a person may give to a candidate or campaign organization thus involves little direct restraint on his political communication, for it permits the symbolic expression of support evidenced by a contribution but does not in any way infringe the contributor's freedom to discuss candidates and issues. While contributions may result in political expression if spent by a candidate or an association to present views to the voters, the transformation of contributions into political debate involves speech by someone other than the contributor. Given the important role of contributions in financing political campaigns, contribution restrictions could have a severe impact on political dialogue if the limitations prevented candidates and political committees from amassing the resources necessary for effective advocacy. There is no indication, however, that the contribution limitations imposed by the Act would have any dramatic adverse effect on the funding of campaigns and political associations.2" The overall effect of the Act's contribu22 Other factors relevant to an assessment of the "intensity" of the support indicated by a contribution include the contributor's financial ability and his past contribution history. 23 Statistical findings agreed to by the parties reveal that approximately 5.1% of the $73,483,613 raised by the 1,161 candidates for Congress in 1974 was obtained in amounts in excess of $1,000. In 1974, two major-party senatorial candidates, Ramsey Clark and

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