Stephen Colbert and Jimmy Fallon

Stephen Colbert’s “The Late Show” maintained a slim edge over Jimmy Fallon’s “Tonight Show” in households on night two of Colbert’s CBS run, but Fallon reclaimed the No. 1 spot in the adults 18-49 demo with Wednesday’s episode.

“The Late Show” nabbed a 3.2 household rating/8 share on Wednesday, compared to a 3.1/8 for NBC’s “The Tonight Show” in Nielsen’s 56 overnight metered markets, which cover about 70% of U.S. TV households. In adults 18-49, “Tonight Show” rebounded solidly with a 1.2 rating, compared to a 0.8 for “Late Show.”

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In its Tuesday debut, “Late Show” delivered a 4.9 household rating and 1.5 in adults 18-49. “Tonight Show” fell to the No. 2 slot against Colbert’s debut with a 2.4 household rating and 0.8 in the key demo.

Fallon’s “Tonight Show” was enhanced by guest Justin Timberlake, who joined with Fallon for a “History of Rap” performance that went viral even before “Tonight Show” aired on Wednesday.

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CBS noted that “Late Show’s” household rating was up 113% compared to the same night last year when David Letterman was at the helm.

ABC’s “Jimmy Kimmel Live” has been overshadowed for the past two nights by the CBS-NBC duel. In the overnights, Kimmel pulled a 1.4 rating on Tuesday and 1.5 on Wednesday.

Posted by:Cynthia Littleton, Variety