On one side, obviously, big business played a role. That would have been the case with Hillary. However, on the other side, Trump used a good deal of his money to get in. In fact, it could be argued big business didn't help him and they were not strong enough against Trump's money to get, say Jeb Bush as the candidate.
Anyway, as the title suggests, the two persons nominated are soaked with scandal - but now, only Trump's crimes are in the spotlight.