On July 29, a U.S. District Court handling the case Judge v Quinn ruled that any candidate for U.S. Senate in the November 2010 election for the full Illinios term should also automatically be on the ballot for the special 2-month term that is also on the November ballot.  See this story.

This seems peculiar, but it spares any of the parties from the task of choosing their own nominee for the 2-month term, so the decision will probably will go unchallenged.