Cynthia Littleton Business EditorCW and Nexstar have set a long-term renewal of their affiliation agreement, securing the network’s broadcast distribution in 37 markets with the nation’s largest TV station owner.The deal covers Nexstar’s WPIX-TV New York and KTLA-TV Los Angeles, in addition to other top 10 markets such as KDAF-TV Dallas and KIAH-TV Houston. In all, Nexstar’s CW affiliates reach more than 38 million TV households representing about 31% of all U.S.