It appears obvious that Rubio and Kasich have no chance of winning the nomination. Their failure to withdraw, effectively, only serves to guarantee a Trump nomination — as the only way to defeat Trump is to have a one-on-one contest against him. It could theoretically be any one, but only Cruz is strong enough at this point. And the one-on-one needs to happen before Tuesday’s upcoming primaries in Florida and Ohio.
Since it is apparent that Rubio and Kasich will be putting their own political interests over that of the party and nation by remaining in the race and thus insuring a Trump nomination and Clinton presidency, the results of the rest of election calendar through November is mostly predictable.