Theoretically when a politician wins he rewards his voters, or at least spares them some of the pain.
However, Donald Trump isn't a normal politician. He does things differently.

Late night quickie. I haven't had a chance to analyze what they're doing, this is a summary taken from a CNN article that came up. Here's what the article describes as what's in and what's out. Notice how it's mostly small change with a rather innocuous "billions for new defense spending, including the global war on terrorism".