"Schwarzenegger seemed to be the lesser of two evils compared to Bustamante, but that rationale disappears when Bustamante turns out to be the candidate that can't win." Busty is still polling ahead of Tom. Arnold is the clear frontrunner. If Arnold's supporters jumped to Tom, all it would do is pull Arnold down to Cruz's level of support, raise Tom closer to Cruz's level of support, and Cruz might emerge as the winner. This appeal is an appeal to suicide.
Yup. Remember, Bustamante's name will not come off the ballot at this point. Switching to Tom will just keep davis in office.