ROCHESTER — Steve Patterson could write a book, “What I Learned about Running for Governor as a Third Party Candidate." It would not be a happy tale. The Austin, Minnesota, businessman faced the longest of long odds in his run for the state’s top political office as a third-party candidate. But Patterson is a bit of an idealist and wasn’t afraid to try. He had tried it once before and thought he could do better. But he found that the rules had changed.