Don't be surprised to see former Majority Leader Dick Armey on the debate stage, perhaps in South Carolina this May. Armey knows full well he won't win the nomination. But, as one knowledgeable source told me, he is seriously considering jumping in for the national exposure and for the chance to duke it out with Newt Gingrich. It's no secret that Gingrich may run and that Armey isn't a big admirer of the former speaker. The libertarian Armey, never a fan of the Iraq War which Gingrich supports, has reserved his strongest criticism for "enforcement-only" Republicans, along with the Christian Coalition and evangelical leader James Dobson. Armey strongly supports the president's call for comprehensive immigration reform and a guest-worker program; Gingrich is steadfast against it. After Armey recently criticized the GOP for having "pandered to Christian evangelical conservatives," Gingrich fired back on Fox News: "When Dick Armey looks at Nancy Pelosi and Charlie Rangel and huge tax increases he's going to love those evangelicals." So, buckle up. If Gingrich (who I believe is more likely to run than Giuliani) and Armey enter the fray, the GOP debates should be just as entertaining as those on the other side of the aisle. Stay tuned…