Interesting (alarming) article regarding mandatory voting

Swedish economist Patricia Funk has posted this article: Is there an Expressive Function of Law? An Empirical Analysis of Voting Laws with Symbolic Fines on SSRN (Napster for Nerds). The gravamen: "in public good areas such as voting, a law targeting at the civic duty (even if hardly enforced) might have a bigger impact on behavior than actions which affect the costs of provision for the public good."