Although it won’t be available in hard copy for several weeks, you can now download a copy of the final version of Richard L. Hasen, Rethinking the Unconstitutionality of Contribution and Expenditure Limits in Ballot Measure Campaigns, 78 S. Cal. L. Rev. 885 (2005) at this link. The article is part of a symposium on The Impact of Direct Democracy. If the rest of the issue becomes available on line (including comments by Bernie Grofman and Dan Ortiz in part on my paper), I’ll provide another link.