what's this assessment of this major announcement from chris christie? >> yeah. it's a significant development in this race and the field is narrowing here just on the eve of voters beginning to weigh in and having christie who, of course, has been the most vociferous trump opponent inside the republican field depart from the stable tells the story of where the republican party is right now. according to sources, wolf, that i've spoken with, he is expected to say that he's done the calculation here and simply doesn't see a path to winning the nomination and that is where he came to this conclusion to suspend his campaign that he knows it's the right thing for him to do and that he is still going to stay committed to the rationale that got him into this race which is being opposed to donald trump and his dominance inside the republican party, to try to coax the republican party to move on from donald trump and