All it's likely going to be is Romney saying he isn't going to let himself be drafted.
I expect the speech, and I can't believe we are even sitting here talking about or caring about Mitt Romney again, to just be about him talking about how wrong Trump is for the party. He will go on and on, and it will just be another Rubio/Cruz/Clinton anti-Trump thing, and that's it.
And it will make people that much more anti-establishment and it will backfire, yet again.