I’d be willing to bet Hannity will formally endorse Trump once Cruz is officially eliminated from getting 1,237 delegates (could happen tonight if Trump sweeps NY) and urge both Cruz and Kasich to suspend their campaigns (which would happen in a normal election when one is eliminated from the nomination).
Hannity would base the endorsement of Trump on getting party unity and trying to not see this thing head to Cleveland undecided on who will be the GOP nominee!!!
[I’d be willing to bet Hannity will formally endorse Trump...]
Journalists and media hosts have a contract they have to sign NOT to officially or any other way endorse a political candidate.