In a rare move, CBS is scrapping its daytime lineup to carry live coverage of Comey's testimony before the Senate Intelligence Committee, and NBC and ABC are doing the same. With the advent of cable news channels, the broadcast networks felt less duty-bound to break into their scheduled shows. They ultimately did what Wheatley predicted, airing live coverage of key testimony but not every minute. Still, it takes a major news event to compel the networks to go live from a congressional hearing room. Their willingness to do so for Comey is a testament to their belief that Thursday could be a historic day.
Source: Washington Post June 06, 2017 20:38 UTC