After 6 weeks of the 2008-9 season through November 2, 2008, CBS has the largest season to date audience with 11.26 million viewers (followed by ABC with 10.06 million) and the most adults 25-54 with 4.96 million (again followed by ABC with 4.58 million).
ABC and CBS are now in a tie for highest average for adults 18-49 with 4.05 million (followed closely by Fox with 3.94 million). Fox has the highest average (1.86 million) for adults 18-34 followed closely by ABC and NBC tied for second with 1.65 million. And while I added the tiny broadcast networks to my weekly ratings chart, no one really cares about them, so I won't be cluttering up this chart with them.
(click chart for full sized image)
Nielsen TV Ratings Data: ©2008 The Nielsen Company. All Rights Reserved.