The same South were exit polls asked people about their religious affiliation? The same polls where many said that they were "evangelical", but rarely attend church. Do you mean that South? How can a person be evangelical and not attend church weekly? That behavior is more like old school denominations where people show up for Easter and Christmas.
Cruz took evangelicals for granted, mocked them, and dumped them in favor of Romney and Glenn Beck.
His father and Kenneth Copeland declared him the anointed one to lead the Seven Mountain Domionionist cult as it merges with Mormonism. Evangelicals were not amused.
“I never knew you; depart from me”