There is another reason that seems to be escaping the rats. Unintended Consequences.
The left absolutely destroyed the Bush name. So much so that few republicans, even the moderate ones will not pull the lever for Bush. Crispy would have been their best route to take, however after they created Bridgegate, that option was off the table.
Which leave Rubio, Walker and Cruz as your three main candidates. They won’t push Rubio because of his latino ties. Which leaves Walker and Cruz.
Would suck to be a rat waking up to that news.