I have written it before, and will write it again that if Trump win the nomination he will lose the General Election and the GOP will lose the Senate but not the House.
I can see Trump losing in a Minority-Majority State like Texas because of the fact he will not carry the Hispanic\Latino\Tejano vote, and will never carry the Black or female vote, so it leave him the white vote which is less than the minority vote.
Now his supporters will argue against me and will educate me how he will carry this state, but I do not see it, and if Johnson is the Libertarian candidate then Trump loses the Libertarian vote, and might lose some swing voters that might vote for Gary Johnson instead of Trump.
Then you have New Mexico and it Native American\ Latino\Hispanic population that could also go blue against Trump, and Florida is not a lock either...
If the GOP voter were as smart as they believe they are they would have backed Kasich while positioning Rubio for VP, and with that combination the GOP would sweep the election, but they are not, so let see what happen at the brokered convention because no one will get the needed amount of delegates to be the clear winner...