But if you were to remove the Super Bowl from its average last year , NBC would have actually been up thanks to `` The Voice '' boosting its fall ( and despite a rather spectacular midseason ratings crash ) . CBS won the 2012 - 13 broadcast season in the coveted 18 - 49 demo . The win snapped CBS 's 21 - year winning streak . CBS has led for years in total viewers , but the 2012 demo win is its first in 21 years .
CBS won the 2012 - 13 broadcast season in the coveted 18 - 49 demo . The win snapped CBS 's 21 - year winning streak . CBS has led for years in total viewers , but the 2012 demo win is its first in 21 years .