A lot of what got Trump here was the monumental advantage of not having baggage. No office, no votes, no promises, no backtracking.
 
All of that stops now. He arrives in office promising to make America great again. The simplicity of the promise was the appeal. The delivery will be vastly different.  

Doesn't mean he can't or won't do it, but the days of simply being able to say it's all broken and all you need is me have ended. The accountability clock is ticking.