Tea Party relevancy
I'm surprised when I hear people ask about "what has the Tea Party actually done?" or suggest it doesn't matter anymore. David Weigel lays out how the Tea Party has completely set the Republican agenda, and the policies of the GOP presidential candidates (excluding Huntsman, sort of, but including Romney). Yeah, we all know this stuff already, I think. But sometimes people forget it.
The Tea Party isn't what they were a few years ago, obviously. But in many senses a lot of their work is done and remains in place -- moving the goal posts, creating a new normal.