TIS, late entrants are possible. However, each state has a procedure with dealines to have one's name placed on a primary ballot. So, for all practical purposes those deadlines have passed or will pass shortly. Still, there are many unpledged delegates who could rally around a candidate during the convention.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."
