From Jay Carney at TIME:

So Mike Huckabee has brought on Ed Rollins to be his national campaign chairman. There are two things to note about this development. First, in Rollins Huckabee gets a heavyweight political operative who knows how to run and win a national political campaign. Rollins was political director to Ronald Reagan in Reagan’s first term and ran Reagan’s landslide, 49-state re-election victory in 1984. Huckabee is sending the message that he does not intend to win Iowa and then fade away. He is in it to win it.