I'd probably drop the socialism angle like its hot because most conservatives are already on his side.
I'd continue to push the "I'm a war vet, I know how to end Iraq the most quickly; i know more about foreign policy than j00" campaign line.
And lastly and more importantly, I'd point to the fact that the democrats control congress now; AND some judges are starting to get old.
Do we really want ALL THREE BRANCHES of the government to be controlled by the Democrats?
I would push hard for those independants who want to keep the system of checks and balances and scare them out of having an all democrat government.