the bridge crossing when he was on the edge of the mexican border but it was very brief. then as you saw, once the questions started to get specific, trump was reluctant to go there. even as he wanted to entertain media appearance after media appearance, take the opportunity to be in front of all the camera cameras that came down to watch him tonight. >> obviously everybody in the country is both participating in and gawking at the fact that he is getting all of the attention for the -- in terms of the republican nominating process right now. and actually in terms of the nominating process overall. neither candidate -- no other candidate from either party is really able to break through right now. simply for the fact that he's dominating so much of the coverage and so much of the attention. as that continues to wear on day after day, that can't last forever. but as it continues to wear on, is he changing as a candidate? is he handling things differently than he was? is he maturing as a candidate? getting better or worse at