Cruz organized at the FRONT END of the process and ensured he’d identified his most ardent supporters, with the best name recognition, in each Congressional District, and at the State level.
That is called a “slate”.
Then, when other Cruz delegates see a Slate of vetted Cruz supporters running for National Assembly, they know their best bet is to vote for that slate.
Aside from that, of the 630 delegates running for National from the State Assembly (14 pages) only 1 page was bound to Trump, while 4 1/2 pages were bound to Cruz.
(8 1/2 pages unbound)
THAT is why Trump canceled his speech at State and decided to whine and lie about the process, instead.
That’s nice and all but that is just a selection of delegates.