I find to my surprise that I have a post on Rick Santorum from 2005. It arises from an article quite critical of him.
Also, chiefly for Cassandra, an old post on Democratic purges and the danger they posed to the party. I came down on what I take to be her side; but the year was 2006, and the Democrats did well in the next two elections. Maybe 2010 was the point at which purging the ideologically impure began to harm them; but I doubt it, all things considered.
So, my analysis was wrong: but why was it wrong? Do the facts imply that purges were helpful in achieving the wave elections of 2006 and 2008? Or are they just irrelevant, noise in the face of greater matters? If so, what are the consequences of that?