People should not be the slightest bit surprise about Oklahoma. Oklahoma is a very religious state where religious purity matters above all. There is a 20-30% of the traditional GOP base that always votes for very religious candidates above all. Rick Santorum (the religious candidate) won the OK primary popular vote in 2012. Here is the 2012 GOP map by popular vote wins
(Romney = Orange, Santorum = Green, Gingrich = purple)
2016 Map by popular vote (Trump = Blue, Cruz = Blue, Robot = Red)
This is over.
Cruz has no appeal outside the deep south/religious states and he lost multiple southern/religious states. Rubio the establishment pick, has one win. Trump has proven cross-country GOP appeal AND cross-over appeal with disfranchised democrats and independents; which there will be MANY when Hillary gets the nomination (many democrats despise Hillary).
Rubio's last stand is Florida. He is on track to lose to Trump badly. Rubio only does OK now in some suburban cuck counties. Your neocon National Review/big business GOP establishment types which are a niche group nationwide. You can see this if you look at the county breakdown map here (scroll down a bit):
https://en.wikipedia.org/wiki/Republican...ries,_2016
Cruz will probably get a few more wins in very religious states; of which there isn't that many left. He isn't gonna win big population states like California or the cluster of northeast states and certainly not the southwest. Only reason he is still in this is because he is a current Texas senator and got a big grab of delegates via Texas last night. Kasich and Carson are non-entities. Kasich might win Ohio. Who cares. Carson will siphon a few votes off Cruz in religious states (edit: looks like Carson is about to drop out; probably endorse Trump soon).
Now that said, the GOP establishment could tell Trump to fuck off; they are coming out hard already blatantly questioning his supremacy. Not surprising really since Trump has been calling them out since day 1.
But this GOP reformation has been a long time coming; the elites established an unholy alliance decades ago that co-opted working/middle class folks, business people of all stripes, and religious types under one very loose connecting banner. It's all coming unglued now.
1. The religious types haven't got what they wanted - abortion made illegal
2. The working/middle class types have gotten thrown under a bus - off-shoring/illegals and no economic/wage growth.
3. The business types have only benefited if they have international operations (big business types); your domestic small business people have not benefited at all from the GOP unless they were a construction company or something employing illegals.
So the only people who have been getting what they want for a while now have been big business folks; which are a relative small crew of people. Everyone else is pissed that they have been sold down the river.
1. Working/middle class and domestic business folks (a large part of the population) are generally behind Trump; a large demographic that cuts across party lines.
2. Rubio got some of the big business types (who live in suburban Cucksville as shown on the county map; where a lot of big businesses have operations). However, there is Hillary if you want a proven big business whore and it looks like she will be the democrat nominee. Rubio has proven he is not a contender after last night. This is why you hear comments from GOPe types who say they would vote for Hillary over Trump; they only care about their anti-American big business operations and give zero fucks about anything else. They have no loyalty.
3. Cruz has got the religious types; of which there isn't any significant numbers of among democrats or independents. Cruz has a conservative religious minority demographic on lock and that's it. Zero appeal beyond that. Religious/social conservative purity above all else. That won't fly with most of the country.
The unholy alliance has been broken and the GOP reformation is coming. Trump is gonna reform the GOP into the an old school populist/pro-America ("common sense conservative") party; he has the demographics, proper environment, and numbers to do it. The biggest test honestly was getting past the religious firewall of southern states since they do represent a significant minority of the current GOP base. He has passed that test. The big business figurehead (Rubio-Foambot) has virtually no support base and is not a contender as mentioned; there isn't enough big business cuck types to keep Rubio afloat. The working/middle class types who would have supported a Rubio in the past have checked out for good.
The death of the GOP establishment and its unholy alliance is imminent and any who oppose Trump will be purged from the reformed GOP. This IS happening; we are past the point of no return.