As of now, Trump is at 55%, Cruz at 25%. 80% among the top two doesn’t leave much for the over ten or so. LOL.
I am of the opinion that the bottom 10 candidates are fighting for some kind of post convention dispensation. Perhaps a cabinet position, support for a local campaign job (Senator or Gov??) or perhaps a retirement job like ambassador to a favored or prestigious country. Perhaps support for favorite legislation?
Though at <10% there is not much carrot or stick