Why is The Republican Party so tribal?

So we're over 100 days in Donald Trump's presidency and my life hasn't really changed. So far there's nothing huge I can blame on Trump or praise him for. I guess he did kill the TPP which Hillary Clinton was all for. That was really good.

But my life hasn't changed. I live in the same world. I live with the same economy.

But that's not true if you ask Republican voters. The economy is much better than Obama's just 100 days into The Trump Presidency they seem to think.

It's not just that but Syria seems to be a real problem not that Obama is out of The White House. I don't know what's changed in the last 100 days but take a look at this poll.

This is why it's so frustrating to talk to Republicans. The discussion on their side isn't about policy but rather it's about party.

If you ask me this is even crazier than nationalism. All it took was a change in The White House for these people to change their minds.