When conservative author and talk radio host Laura Ingraham sits down in the anchor chair on Oct. 30 for the first time as a host on Fox News’ evening lineup, the cable network will be making a multi-prong bet. The first is that its audience will gladly stomach another evening hour of ardent Donald Trump boosterism. Already, there are signs of trouble. A number of Fox staffers are dreading the possibility of working for Ingraham, who, even among the healthy egos that populate America’s cable newsrooms, has built a reputation as overbearing. According to numerous sources, Ingraham has been,