Biden was throwing red meat to the leftist base - they love to hate Cheney - even when they don’t know why!
Did anyone notice or comment on Biden’s facial expressions when Palin was talking? Would love to see some of his faces posted here for captioning fun.
Not always the best way to convince the undecideds that they should vote for you. Obama is running a campaign against Bush. It is clear this works to incite the left, not so clear it convinces the undecideds.
You're making it sound as if they need a reason to hate Dick Cheney. I can assure you that they don't need any reason beyond his very existence to hate him.