Or, maybe not. Maybe it's being facetious, advocating for anyone who runs against Cheney, because Cheney is going to choose a very evil running mate, the driver thinks.
Maybe. Or maybe it means Cheney is Satan. But that doesn't make any sense, since you can't be on a presidential ticket with yourself. So at least we know they're not saying that.
Probably what it means is that the driver will vote for Cheney, even if he's running with Satan, since he expects the nominated Democrat to be so evil, he'd rather vote for a Cheney/Satan duo. "Cheney, with anyone, would be better than your guys," he's saying. I don't support that sort of thinking, but I don't want to talk politics.
Wait -- it's probably saying that Cheney and Satan are politically aligned, and that they're going to vote for that alignment. Or they're not joking that they're politically aligned, but are joking that they're going to vote for Cheney, who, as a Satanist, would likely choose to run with -- surprise! -- Satan.
Maybe there's no facetiousness, and there's like, a guy last-named Satan in office somewhere who's legit. A guy named Patrick Satan plays hockey, for instance.
Maybe it's a reference Van Halen fans would get! -- the whole running-with-the-devil thing. But probably not, for the very reason that it's too thinly-veiled as a joke, and the payoff is limited. I wrote the whole "running-with-the-devil" thing, and I'm not really laughing about it that much. It seems like a long way to go for an insider-wink at fellow Van Halen fans.
Anyway, I like bumper stickers that make me stop and think.