Congressman Fred Upton spent his weekend edging closer to a run for the U.S. Senate. At the Mackinac Republican Leadership Conference, Upton took informal steps toward entering the race to challenge long-time Democratic Senator Debbie Stabenow. The St. Joseph Republican cautions he’s still a ways off from making any announcement, but several top GOP members are expecting him to make the move. Declared Republican candidates so far are former Michigan Supreme Court Chief Justice Bob Young and businessman and Iraq War veteran John James. Grosse Pointe businessman Sandy Penser is also expected to run and spend a lot of his own money in the race.