Governor Carlson canceled a trip to Duluth today to campaign for his veterans state park project. The park would feature a retired naval cruiser, the U.S.S. Des Moines. The governor cancelled the trip after his office received a series of nasty phonecalls, purportedly from opponents of the park. This is the latest development in a highly passionate debate over what is usually a benign issue: the creation of a Minnesota state park. Tomorrow Duluth residents go to the polls to decide the fate of the project. Minnesota Public Radio's Amy Radil reports from Duluth.