Christie did a smart thing with the special election for Senator. He diverted Steve Lonegan, the conservative who ran against him in the 2009 primary, and Cory Booker, the strongest Democrat challenger to him, into that race. That greatly strengthened his re-election prospects.
Get out and vote for Lonegan in October. Make calls, write letters. If you have money, give some. Do everything possible to get him elected. (We must work on getting Lonegan in the Senate and the entire GOP ticket in Virginia elected.) Then do what you can to stop RINO Christie in November.
Even if he is re-elected, diminishing his margin diminishes his Presidential chances. See Rockefeller, Nelson.