CBS Evening News a one-evening test broadcast on August 19, 1965, before permanently switching to the format on January 31, 1966. Cronkite's prime time special report, "Who, What, When, Where, Why", broadcast on February 27, 1968, ended with his declaration that the United States could only hope for a stalemate in Vietnam. It is often credited with influencing Lyndon Johnson's decision to drop out of the race for President. "If I've lost Walter Cronkite ... [I]'ve lost Middle America", he stated. Under Cronkite, the newscast began what would eventually become an 18-year period of dominating the ratings among the network evening news programs.
Walter Cronkite Howard K. Smith and Harry Reasoner, because ABC at the time fed their newscast live at 6:00 pm Eastern instead of 6:30 to get a head start on CBS and NBC for those stations that aired "ABC Evening News" live (although not every affiliate did). On December 10, 1963, Cronkite introduced The Beatles to the United States by airing a four-minute story about the band on "CBS Evening News". This was originally broadcast on November 22, 1963, and was going to be shown again on the "CBS Evening News", but the assassination of John F. Kennedy prevented the broadcast at