Trajectory. Donald trump has remained the frontrunner and he comes in tonight after extraordinary day in which rather than fighting with his rivals he was battling 2012 nominee mitt romney. Having been called a phony and a fraud by romney, he said that romney is a light weight, a choke artist, and a failed candidate, both in 2012 and 2008. Trump will be center stage tonight, flanked, as he has been in the last two debates, with ted cruz on one side and marco rubio on the other. Marco rubio has been charging hard at donald trump, having taken him on directly and in the last debate, really engaged with trump more than anybody has in the entirety of the campaign. Cruz has been battling with trump as well. He has also got to deal with marco rubio and he did what cruz did, wrack up his fourth win out of the 15 that have happened. Mr. Trump has won 10 of 15. Marco rubio one÷ of 15. John kasich will be here tonight. He is playing heavily in michigan. He, of course, the governor of ohio needs