When your opponent has bad economic numbers, you talk about the bad economic numbers.
When your opponent has good economic numbers, you create different numbers.
And when your side is losing 50K jobs month, like Bush in 2008, you blame the other side.
The one thing you never do - and I mean never - is give the other side credit for anything positive. The whole point of Talk Radio, Fox News and the internet is to ensure people have talking points.
You never hear them talk about the real poverty level of the Reagan years. You don't hear this because they use the standard employment metric when it benefits them.
There is no possible way to argue with a pure partisan who deeply believes that the other side is evil and must be stopped. This isn't about economic numbers. It goes way deeper than data.