Much has been written about how the Tea Party movement is simply an extension of the GOP, but I never really bought that argument. As my colleaugue Dan Testa has reported previously, the rallies – at least locally – attract an eclectic group whose concerns range from deficit spending to social issues. In April, Testa wrote: As the movement enters its first election year it remains a mystery to political observers of every persuasion what the concrete impacts of the Tea Party will eventually be. The grassroots, decentralized nature of the Tea…