Ohio Gov. John Kasich was right at home amid a breakfast crowd the morning of his most recent political triumph. Just before 9 a.m. he escaped the freshly fallen snow to enter the iconic Red Arrow Diner in Manchester, N.H. Then the son of a postman from McKees Rocks, Pa., just outside Pittsburgh, set about greeting patrons lined up on bar stools in a venue that is an obligatory stop on the way to the White House.