Plant the story that the Gov uses personal email for state business.
Hack her personal email.
Manufacture fake but accurate government business email and distribute to the press at the most opportune time (from the Obama perspective).
McCain/Palin must get out front of this story and raise questions about the authenticity of anything "official" that hits the news wires.
....’The Secret Service contacted The Associated Press on Wednesday and asked for copies of the leaked e-mails, which circulated widely on the Internet. The AP did not comply’...