The New Politics of Judicial Elections 2004, by Deborah Goldberg and coauthors, was published by the Justice at Stake Campaign and hosted on this domain. The report documented campaign spending in state supreme court elections and was cited in the supplemental amicus brief of Justice at Stake in Citizens United v. Federal Election Commission before the Supreme Court of the United States.
The report is preserved in the Internet Archive at https://web.archive.org/web/2016/http://www.gavelgrab.org/wp-content/resources/NewPoliticsReport2004.pdf and the New Politics of Judicial Elections series is available from the Brennan Center for Justice.