The back door methods Cruz needs to invoke to challenge Trump at the GOP Convention will ensure the Democrats hold the White House for at least another 8 years. He has made himself unelectable and if he had any integrity at all he would bow out and support Trump instead of continuing to divide the Party. Without unity the Republicans don't stand a chance much like when the Dems had the edge on Bush they blew the election because they wouldn't unite. If Trump is a failure the Republicans can challenge him in four years and still save face with the American public. As it stands now, I would rather not vote than to cast support to Cruz.