David E. Johnson of the Strategic Vision polling firm tells me he’s releasing tomorrow a poll of the New Jersey governor’s race that was conducted over the weekend. It shows Republican Chris Christie leading incumbent Democrat Jon Corzine 47 percent to 36 percent. Corzine’s job approval is 36 percent, with 54 percent disapproval. Against Bogota mayor Steve Lonegan, Corzine leads 44 percent to 39 percent. Against Brian Levine — who may have to leave the race — it is Corzine 42 percent to Levine’s 40 percent. Against Rick Merkt, Corzine leads 45 percent to 30 percent.