Charles Krauthammer makes an interesting observation about the 2006 elections. Both parties tacked to the right. Republicans shed many of their moderate centrists (thus becoming more conservative) and Democrats elected a great many Congressmen with much more conservative points of view.
 Krauthammer dismisses the election as a minor earthquake. The challenge for Democrats is to hang on to the center ground. If their ultra-liberal wing has its say they could soon be out of power again.