I’m reeling, but that’s probably because I can’t get over his growing resemblance to Chevy Chase. Two sources close to Jeb Bush, including one who has spoken to the former Florida governor within the past few hours, say he is seriously considering a run for Senate now that incumbent Republican Mel Martinez has retired. “He is receiving a lot of encouragement from both in and out of the state,” an longtime Bush adviser said tonight. “He is going to take his time and approach this very methodically.” Bush will weigh, according to this adviser, how a run would impact his...