Elizabeth Marvel stars as Elizabeth Keane and F. Murray Abraham is Dar Adal in “Homeland.” When the new season of Showtime’s “Homeland” went into production, the presidential election was still ongoing, and few people at the time could predict what would happen – and is still happening. Before writing any scripts, though, the writers, producers and key members of the cast annually meet in Washington, DC, with counterterrorism and national security experts to get a sense of what type of worries the country might face in the future.