Last Week's Evening News Ratings The NBC Nightly News is the #1 evening newscast, but ABC's World News Tonight is #1 in the coveted 25-54 demographic. Last week's ratings mark "the fifth consecutive week World News Tonight was number one in the key demo," a press release says. "Nightly News displayed its lowest Adult 25-54 delivery since September 1987," ABC noted. Here are the ratings, in total viewers and the 25-54 demo: NBC: 7,900,000 / 2,460,000 ABC: 7,650,000 / 2,760,000 CBS: 6,590,000 / 2,110,000