you re in the situation room . the first republican presidential contest is two weeks away and a top obama adviser says the democrats are counting on a long primary season slugfest between newt gingrich and mitt romney. every word from the candidates could make a difference. jim acosta is covering the final sprint of the caucuses. jim, we re seeing a possible shift in the romney campaign strategy. what are you seeing? what are you hearing? reporter: well, there may be a big momentum shift for mitt romney out here in iowa, wolf. he had a pretty good debate on thursday night against the gop field. he merged pretty much unscathed. he was not the subject of the attacks from the other candidates. that was really newt gingrich s role. he was beat up pretty good during that contest. and so mitt romney came into a city and he said he plans to take over the voters in the coming weeks. what concerns me is that we have in washington a class of people who spent their whole time i