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Ratings: ‘Supergirl’ Sinks Again in Third Week

CBS show drops another 23 percent in key 18-49 demographic

“Supergirl” needs a ratings hero, stat.

The CBS comic book adaptation sunk 23 percent in its third week in the key 18-49 demographic. Last week, the drop was 31 percent from series premiere to Episode 2.

NBC topped both the main demo and total viewers on Tuesday, edging ABC by about 100,000 audience members in the latter measurement.

NBC was first in ratings with a 2.9 rating/9 share in the advertiser-coveted 18-49 demographic and in total viewers with an average of 10.5 million, according to preliminary numbers. “The Voice” at 8 p.m. earned a 3.2/10 and 12 million viewers. “Blindspot” at 10 posted a 2.2/7 and 7.6 million viewers.

ABC was second in ratings with a 1.7/5 and in viewers with 10.4 million. At 8, “Dancing With the Stars” put up a 2.0/6 and 12.6 million viewers. “Castle” received a 1.0/3 and 6.2 million viewers.

CBS was third in ratings with a 1.6/5 and in viewers with 8.4 million. “Supergirl” at 8 had a 1.7/5 and 8.2 million viewers. “Scorpion” at 9 got a 1.8/5 and 9.3 million viewers. “NCIS: Los Angeles” at 10 received a 1.2/4 and 7.8 million viewers.

Fox was fourth in ratings with a 1.0/3 and in viewers with 2.9 million. “Gotham” at 8 posted a 1.5/5 and 4.1 million viewers. A rerun followed.

Univision was fifth in ratings with a 0.7/2 and in viewers with 2 million.

Telemundo was sixth in ratings with a 0.6/2 and in viewers with 1.6 million.

The CW was seventh in ratings with a 0.3/1 and in viewers with 1 million. “Crazy Ex-Girlfriend” at 8 had a 0.3/1 and 1 million viewers. “Jane The Virgin” at 9 got a 0.4/1 and 1.1 million viewers.