When the Roger Ailes sexual harrassment charges became public, a bunch of Fox News employees (mostly guys) stuck up for Ailes and said the charges were untrue. One name conspiculously absent from his list of defenders was the biggest female star on the network...Megyn Kelly. Why didn't she defend him? Turns out, he also sexually harrassed her.
That's it. It's all over for Ailes.
They may have to wait until after the convention, but Fox News has no choice but to fire him now.