a boost. the detroit news endorsed him. but he is far behind in delegates and so is marco rubio. diane eastabrook reports. >> reporter: marco rubio got a super star welcome in michigan one day after a bruising super-tuesday, less than a week before the michigan primary, the florida senator appealed to a crowd of nearly a thousand near detroit to block donald trump's path to the republican presidential nomination. >> what people are saying is please, everyone get together so we can keep this front runner from winning and destroying the republican party. [ cheers and applause ] >> believe me i am a unifier. >> reporter: trump is on a roll. he also has a commanding lead going into michigan's primary next week. stopping occasionally while