That will not happen. Period. He has the electoral votes, he will be the nominee, he will not drop out in favor of someone 99% of the country has never heard of.
Well, I was being rather tongue in cheek, but all the same, it's a shame onservatives are so mentally boxed in that they can't figure out that maybe the better way is to bust our humps to make the rest of the country hear about a real conservative, rather than resigning ourselves to yet another milquetoast socialist ninny.