One more point: This election cycle we are focused mainly on the presidential race far more than the congressional races. It is VITALLY IMPORTANT as well that we keep on electing Tea Party candidates for the republican candidacy of these positions. As I said before, I'd rather see a Sharron Angle lose than to see a tepid RINO win, because you cannot depend on the RINO to vote for conservative causes, and worse, it is far harder to displace a RINO incumbent in the primary than win in a general field.
In short: At this point, at least from a strictly technical standpoint, our current BIGGEST enemy is the GOP establishment, aka RINO's.
(An aside: "RINO", or Republican In Name Only, is kind of a misnomer; it automatically assumes all republicans are conservatives, when in fact the republican establishment IS for a larger, less flexible governement, which is the supposed antitheses of conservatism/libertarianism. But I view the GOP as the main force against social and economic tyranny represented by the socialist Democratic Party; and fifth column elements within the party leadership notwithstanding, the GOP is the ONLY organizational structure in which to fight it.)
That is actually the most dangerous part of these debates, to be honest. We MUST ensure that every tea party concern is addressed, but it usually has to be initiated by the candidates because the Democratic Party-socialist-run moderators are NOT going to allow questions that bring out the strengths of the candidates as much as expose the weaknesses, other than for their preferred candidates, and at this point, candidate Mitt Romney appears to becoming the media darling of the primary season.