2012 wasn't a Tea Party campaign. It was a Romney campaign. One that chose to shut out the voice of the tea party. 2014 will be another Tea Party election and if we work hard and succeed in controlling the presidential nomination, 2016 will also be a tea party campaign. Palin '16!
Third, some of the earlier successes have been regressing. Rubio is pushing the Dream Act, while Rand Paul has started saying some pretty un conservative things.
Cruz was a definite victory. But Jeff Flake is a serious step backward from Kyl. I don't' know if the Tea Party backed Flake but I assume they did as Palin did.