The reason that there is no official party or group representing the "people" is that the notion of "people" is ill-defined. What people? Which people?

The Tea Party are deluded in that they blame the very source for their protection, the government, under ideal circumstances not the dysfunction one we have now, is not found in the big corporations who will chew them up and spit them out for lunch.

They have been successfully hoodwinked very much like the early Nazis in Germany.
Think about what the Tea Party has "bought into"? Christian supremacy, mythical moral standards by a mythical past America Uber Alles, anti-intellectualism, pitchfork and torches to anything that threatens their provincial ideas, an association with an interpretation of the working-class which vitiates any union, and a nay-saying attitude to anything that doesn't conform to their narrow values and ideas.

They have put the U.S. government in deep jeopardy which you might call seditious.