I'm too afraid to ask

It's short for Grand Ole Party. It's another name for the Republican Party.

I didnt know that either. US politics is so confusing!

All you need to remember is all parties are created equally-stupid.
They all spend more time blaming and threatening eachother than they spend actually doing something effective. And the dumbed down American people eat that shit right up. Yep, America sure is great. Take it from one.