If Yeb takes 5th, is he still viable? 6th?
Yeb is only in the race because the liberal party hierarchy has anointed him as the nominee, just as they did with Mitt and McCain. They are determined to nominate another loser so they can ensure a Democrat win. That's why they continue to prop up his candidacy.
Eventually, they are going to realize Jeb stinks so badly, even the lo-fos won't vote for him. They will either move on to another loser such as Kasich or they will broker the convention to ensure a Jeb nomination.
If they try to engineer a Jeb nomination, there will be hell to pay