This is still unconfirmed, but I’m hearing that the Michigan Court of Appeals upheld a lower court decision 2-1 invalidating Michigan’s January 15 primary, forcing the state parties to decide presidential nominees in state conventions and caucuses.

I wrote about what this would mean for the Presidential election here. In brief, McCain is now the favorite in the state because of his influence with grassroots organizers. A state nominating convention, as opposed to a statewide election, also neutralizes Romney’s fundraising advantage and makes the pro-choice Rudy a non-starter among conservative party activists who will decide the outcome of a convention.

UPDATE: Confirmed. Possible appeal to Supreme Court, but that seems unlikely.