His home state, and by historically small margins. Bush beat McCain in Texas with 88 percent of the vote.
And he won the only CLOSED primary held so far!
Cruz didn't win Arkansas, which was a closed primary.
In a two person race Cruz out performs Trump
This is a myth pushed by Cruzers using old and poorly made polls.
Ok then show me the polls where Trump wins head-to-head over Cruz.
And apply your same rules to those polls.