 The single-sponsor format began to crumble because of the quiz show scandal of 1958, while the recession which dragged through 1957-58 left it in terminal decline.Currently, most sustaining programming on commercial television is confined to public affairs, religious, and special television news programs (and even most religious programming is now brokered instead).Sustaining programs can occasionally appear in modern times, most commonly if a program loses advertisers (such as through boycott campaigns) but contractual obligations require the program to air until the contract expires, in which case a show may be moved to a graveyard slot to free up what has become highly valuable advertising space; ad rates for new shows are now based on complicated projections based on the network's other programs, and even the rare airing of a television pilot now almost always comes with network advertising.