From NBC's Andy Merten
If you needed any extra proof that Huckabee is now showing up on the radars of journalists, voters, and the other presidential candidates, Obama provided a little while speaking to college students in Cedar Falls today.
Repeating a familiar subtle Clinton-attack line, which he first introduced at the Iowa Jefferson-Jackson dinner in mid-November, Obama said: "Triangulating and poll-testing our positions because we're worried about what Mitt or Rudy or Fred or Mike might say about us just won't do."
What's different this time? The addition of Mike Huckabee to that quick rundown of potential GOP nominees, who Obama hopes to be challenging next year.