I have heard some say they would just opt out if it's Rudy vs a dem, but Hillary in office is not quite the same as Silky Pony or Obama, she has aspirations, 'that look in her eye', that some of the other dems don't necessarily seem to have. Pretty much any Rino would be better. Ron Paul aside - that would be the true conundrum for me.
Hillary would be far more dangerous, as not only would she get as much bureaucratic socialism instilled as possible, but she would fill every nook and cranny with Clintonistas and we’d be trying to get rid of those cockroaches for decades.