You forgot to mention the Fox debate which was as bad as the CNBC debate. They plan to go back to Fox for more, too.
With the whole US media, you are dealing, on average, with a 90 IQ. They are not intellectually nor morally fit to run debates. They are all Jerry Springer now.
Also, should a conservative journalist make it through propaganda school, he or she would have to become liberal in order to please his or her bosses in order to remain employed.