For now, Governor Jon Corzine has quietly asked Democratic party leaders to refrain from public endorsements in the race for the 2008 presidential nomination. But Corzine, unlike predecessors James E. McGreevey in 2004 (Howard Dean) and Christine Todd Whitman in 1996 (Bob Dole) and 2000 (George W. Bush), is unlikely to pressure County Chairmen and legislators to follow his own choice — if he makes one at all. New Jersey Democrats, according to sources close to Corzine, will be free to pick their own candidate. New Jersey appears to be set for a February 5, 2008 primary. The Senate has already passed a bill moving the date up from February 26, and Assembly Speaker Joseph Roberts has said he will post the bill in the lower house sometime soon. Corzine has pledged to sign the bill.