Assemblyman Guy Gregg is now telling supporters that he has decided to challenge longtime incumbent Robert Littell in the June Republican primary for State Senate in the 24th district. Gregg has hired political consultant David Murray, who has worked for many GOP legislators over the last 25 years. The 70-year-old Littell, who has had major health issues in recent years, has been in the Legislature since 1967; he moved up to the Senate in 1990. Gregg, 57, one the Legislature’s leading conservatives, has served in the Assembly since 1994. But some Republican insiders say that Gregg could still change his mind: in 2002, he dropped his U.S. Senate bid just hours before the filing deadline.