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hello, there. it s not quite 2012 yet. we still have some news to get to before the new year. i m hala garani in washington. kyra phillips has the day off and we begin with the latest out of the united states in terms of politics this morning. let s get you straight to iowa and expecting any minute now, by the way, the new jersey governor chris christie will join mitt romney in iowa. christie is a rising star and many republicans wanted in this presidential race. he endorsed romney back in october and this will be their first joint appearance since then. just four days before the iowa caucuses. and mitt romney is going into this confident, according to the polls, still leading four days as we said before these iowa caucuses. cnn political reporter jim acosta is awaiting the event. he s in west des moines this morning. hi, there, jim. what can we expect today and how much might this appearance bice chris christie help mitt romney? well, it will help him a lot. chri ....