What does “fight for each delegate”? Who determines which delegate wins?
The grassroots activists in the states determined which delegates won. The Cruz supporters in both states actually took the time to know and understand the delegate selection rules. They they took the time to go to their precinct caucuses and elect other Cruz supporters to be delegates to the district and state conventions. Those delegates then worked together to identify identify those Cruz delegates that were running to be delegates to the national convention. They made sure that all of the Cruz supporters knew which delegates to vote for; they made sure their supporters knew when and where to show up; and they voted as a unified team for the most part. That is called good organization and grassroots effort. They had a majority of the delegates to the state and district conventions because they were prepared and showed up at the precinct caucuses to elect them. They didn't wait until the state convention to start trying to get support and then whine when they learned it was too late to do much about it.