[JayGalt]

So after 17 candidates to start Trump has 37%, his nearest rival has 28%, Rubio has 15%, Kaisch has 13%. What is your point? Trump has the majority.

If you want to restrict it to greater than 50% (one of many meanings of majority) no candidate has that and so the original premise by the OP is meaningless.

ma·jor·i·ty

noun: majority; plural noun: majorities

1. the greater number.

"in the majority of cases all will go smoothly" synonyms: larger part/number, greater part/number, best/better part

[CA Conservative]

What is your point? Trump has the majority.

A majority is over 50%. Right now, Trump has a plurality among the candidates, but a minority of the party as a whole.