The only candidate running now that has a chance to win the nomination is Trump and since he is the only one that might be able to actually make a difference and reverse the destruction of the Republic we must rally all our supporters and get them to vote for Trump. Cruz is nothing more than a slick talking attorney, just like the rest of them in Washington, and WILL NOT do any of the things he claims he will; he will not do them because its impossible in this cycle for the Senate to become 60 Republicans or better and 40 or less Democrats. Cruz knows this so even though he makes the promises he knows that they will never happen and things will stay just as they are which is WHAT CRUZ AND THE RNC/GOPe WANTS.

Trump has the ability to motivate the public and therefor the congress and so he is the only one that might be able to get things done, since he is the only one that wants to.