I'm sorry, but such people are so stuck inside their preconceived notions of Trump that they're literally, functionally blind.
Trump's background, his character, his policies, policies he's supported in the past, his personal achievements, executive experience, business successes, his family, his ability to overcome adversity, his love of country, his willingness to say what normal politicians never do, his dogged determination to fight for what is good and right, and yes - even his many warts -- all have been under a microscope and vetted with a fine toothed comb, over the last twelve months.
What on earth have these so-called 'conservatives' been doing over the last year? Good Lord, Trump's platform is the most conservative we've seen since Reagan.
The fact is that Cruz utterly disgraced himself in the last few weeks of the Presidential Campaign.
His graceless refusal to concede defeat since have only added to the picture many of us have built up of the man - a corrupt, globalist only interested in his own career and furthering the interests of the establishment.
Right now, myself (a former donor to his campaign for the Senate) and many others are completely finished with him.
If he offers a full-throated endorsement of Trump tonight, throws himself heart and soul into defeating Hellary and stops his creepy side-attacks, there may be some chance for him to come back.