Fox News is still holding tryouts for the 8pm time slot left vacant when it fired Tucker Carlson last month. And the latest conservative media star to get a shot at what used to be the network’s most valuable primetime real estate is former Trump press secretary, and current Fox News host, Kayleigh McEnany.  McEnany will anchor the 8-9 p.m. hour for at least a week, starting Monday, May 8. It could go longer.