According to The Politico:
Fred Thompson, the "Law & Order" actor and former senator from Tennessee, has moved beyond pondering a bid for the White House and begun assembling the nucleus of a campaign should he decide to run, according to people involved in the effort.
Thompson has not yet decided to seek the Republican presidential nomination. But "he is getting more serious every day," said an adviser familiar with Thompson's plans.
Thompson's coming-out as a candidate-in-waiting will be a May 4 appearance at the 45th annual dinner of the Lincoln Club of Orange County in the heart of Ronald Reagan country in Southern California. The invitation was widely sought by aspiring Republicans, and his advisers expect considerable media attention around the visit. But there are no plans now for an announcement then.
Thompson will also stoke speculation with a meeting of House Republicans April 18 at the Capitol Hill Club, organized by Rep Zach Wamp (R-Tenn.), the most vocal promoter of a Thompson candidacy. More than 60 House Republicans have indicated they want to come to hear the former senator, according to organizers.
Thompson will not make a final decision until at least May and may delay any announcement until even later because he recognizes the benefits of being "a non-candidate candidate," according to advisers.