Nielsen says ABC's evening news ratings win reversed upon discovery of error

IndustriesAssociated Press

The Nielsen company says ABC's evening newscast did not break a 263-week winning streak by its rivals at NBC, which had been reported last week.

News ratings for the week beginning Sept. 29 were affected by a software error that created miscalculations of television viewership dating back to last March. Industry officials said the error meant ABC's viewership was consistently over-estimated.

Continue Reading Below

Nielsen had said last week that ABC's "World News Tonight" had averaged 8.42 million viewers for the affected week to 8.25 million for NBC's "Nightly News." NBC hadn't lost a week since 2009.

But in its review, Nielsen found that NBC actually won the week by 170,000 viewers.