So you’ve never heard of the Tea Party movement, Organizing4Palin, Veterans4Palin, JewsforSarah or Conservatives4Palin, etc, etc.? How is that?
Well "the Tea Party movement" is pretty vague and as far as I know, they are supporting a variety of people and have endorsed none. They can't "endorse" anybody since they don't speak with a united voice on individual candidates.
And I'm guessing the other groups combined must number in the hundreds ("Jews for Sarah"?! How many on the roster of that political organization?) Not much of an infrastructure in a nation of 300 million.