TV Ratings: May Sweep Ends With Three-Way Tie

The Big Bang Theory Love Spell Potential Episodic - H 2013
Monty Brinton/CBS

The Big Bang Theory Love Spell Potential Episodic - H 2013

Season-long victor CBS shares its May sweep win with ABC and Fox. The three networks finished the competitive month averaging a 1.8 rating among adults 18-49.

All three of the networks were down from the same period last year, with Fox losing the most (25 percent) -- and fourth place NBC managed to post some growth with a 1.7 rating in the final rankings, making for an exceptionally even spread.

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NBC had The Voice in its corner, fueling the boost, while a lackluster start after the pre-sweep break was largely to blame for CBS and ABC's year-to-year dips. Fox had its steep losses with American Idol, which hurt it even more among total viewers.

As for the 2012-13 averages, they were largely unaffected by the final three days of the season and this week's preliminary rankings in adults 18-49 are unaltered.

May Sweep Adults 18-49 (rating, change from 2011-12 season)
CBS: 1.8, down 10 percent
ABC: 1.8, down 14 percent
Fox: 1.8, down 25 percent
NBC: 1.7, up 6 percent

May Sweep Total Viewers (in millions, change from 2011-12 season)
CBS: 8.73 million, down 8 percent
ABC: 7.12 million, down 8 percent
Fox: 7.48 million, down 27 percent
NBC: 5.34 million, up 2 percent