"Do battle on what? I have yet to see any meaningful difference between Arnold and the Dems even on fiscal issues."
http://www.hjta.org/recallendorsement.htm The Howard Jarvis Taxpayers Association seems to be able to not only see a difference between Arnold and the Democrats, but enough of a difference between Arnold and the other Republicans to give him their endorsement.
... and even Tom respects them enough to provide a link from his site ...