.
You’re using the wrong terminology, wrong analogy.
The first ballot will not produce anything.
The second ballot will make Cruz the nominee.
Then what? Where does he get voters?
The first ballot will decide who the nominee will be
Forget the second ballot, it isn’t going to happen
The Republican party still wants to have voters and supporters, the 2nd ballot will destroy that, they know that.
What good is a party without voters? We call that a dead party.