Sentence:  NBC had spent weeks promoting Mr. Daly's new show, and had even commissioned a special original edition of Conan O'Brien's "Late Night" show . . . to give Mr. Daly's show the best possible lead-in. During his show, Mr. O'Brien twice urged viewers to <WSD>stay tuned</WSD> for Mr. Daly. 
Meaning of the word marked with <WSD> tags:  To remain as a listener or viewer of the particular radio station or television channel to which one is currently paying attention.