The NPR spin as expressed in the article is that the Club for Growth is practically subversive by 'going after' allegedly 'moderate' Republican (RINO) politicians. Translation: the Club For Growth is determinedly conservative and successful in weeding out people like John McCain from the Republican party and it's hierarchy - and the left is worried. Good.
McCainiac is the consummate lib fool tool, detest the jerkoff. I console myself I voted for Palin in 08, could never stomach the back stabber. In 10, Wife and I did not even mark the senate ballot in the general, was tempted to vote for the dem out of spite.