In an opinion you can find here [PDF], a Ninth Circuit district court has lifted a stay on a suit in which the operators of a vote-swapping site, votexchange2000.com, sued the Secretary of the State of California for declaratory and injunctive relief. (Link via How Appealing.)
Basically, the Secretary had sent a cease-and-desist letter to another site during the 2000 elections. That site shut down, and plaintiffs in this case became scared and also shut down. But because the plaintiffs wanted to run their vote-exchanging sites without fear of prosecution in the 2004 elections, they initiated this lawsuit to enjoin the Secretary from prosecuting their sites in the future.
For those who aren't familiar with the issue, the votexchange2000.com site has this explanation:
Voters in a swing state who wish to vote for a third party candidate [can] swap their vote with voters in "safe states" who would normally vote for a leading party candidate. In this way, third party candidates are assured of their percentage of the vote while the supporters of the leading party get to have their vote cast where it matters most: in the swing states.