Next Thursday marks the start of the Conservative Political Action Conference, commonly known as CPAC, where conservative activists gather every year in Northwest Washington, D.C. It's a chance for bigwigs to make speeches to a ballroom full of influential types, which makes it a particularly choice venue for Republican presidential aspirants, which speak there regularly. It's a packed three-day schedule from Thursday through Saturday, so there's room enough for most of them. Tea party hero Michele Bachmann, whose office indicated in January that she's considering a 2012 run, will be the first of the 2012ers to speak. Bachmann, many will...