I am not a member, but I am a Colorado Republicanish independent. In my experience, the Tea Party is NOT about social issues, it is effectively a Libertarian party that supports Republican candidates, and promotes candidates at the convention level to get them on the ballot and steer the Republican party toward more practical libertarian ideals. It is basically pro states rights, against big government, for balancing the budget, against getting our noses in foreign wars, pro American exceptionalism, against demeaning America in the world view.
It is not about dictating social values. It is about government staying out of social issues, but members see taxation AS a social issue, and it is not racist nor anti homosexual, but it is against the government being ACTIVIST with regard to race relations and gay rights, such as by enacting a new definition of marriage, or affirmative action laws. It is generally anti abortion, because its members see fetuses as having human rights, but most strongly against taxpayer funding going toward abortion, and giving the states power over the issue, and requiring due process.