Put down the kool-aid and turn off Fox News. Just a week ago they were saying Trump's ceiling was 35% ...now it's 45-49%. I predict in two weeks (March 16) it will be near 60%.
I have to admit that I was completely convinced that when establishment candidates (Christie, Jeb, Carly, etc) dropped out, their voters would automatically go to another establishment candidate (Rubio). I was surprised to see Trump's numbers go up instead.
But your point regarding Fox News is well-taken, I've been ignoring them for years, since it was clear almost from day one that they're just propagandists for the RNC and the GOP establishment.