That was traditional way, Trump during his campaign sad many things that contradicted itself. Nobody really knew what his actual policy would be in the end.
The messages were more in the tune: "Trump maybe is not the greatest, but Hilary will be a catastrophe."
What we say was a constituency that was upset with the status quo. When given a chance to vote for an outsider, they jumped on it. I think advertising played little to no role in the 2016 election and I've yet to see data to suggest otherwise.