Are you sure?
I read some days back that Cruz attends a Baptist church... But I have no clue what he really is. His priest dad leads some domination theology church.
So when I read Cruz is Catholic caught my attention... Thought you knew something I did not know.
http://www.foxnews.com/us/2016/01/30/now-deeply-christian-cruz-religion-once-wasnt-so-obvious.html
There is some rumor of Dominionist ideology that I don’t quite understand but looks very unattractive from a personal and electoral perspective.