Yeah, but 'scandals' didn't touch Trump because he'd already said the media was out to get him. So every time they went for him, it vindicated and strengthened him in his supporters' eyes. Equally, being prepared to say shocking and offensive things was very much part of his appeal, so that inoculated him against the danger of gaffes. It was a very clever bit of stupidity.
I'm not sure Bernie Sanders would've been able to survive those sorts of bumps in the road as easily.