Updated with fast nationals: NBC’s Tonight Show Starring Jimmy Fallon beat Stephen Colbert’s second night as host of CBS’s The Late Show in overall audience, and in the demo.

Colbert clocked 3.657 million total viewers, to Fallon’s 4.067M. Kimmel logged 1.85M. One night earlier, Colbert dominated in overall audience with 6.55 million viewers, clobbering Fallon’s 2.9M and Kimmel’s 1.75M.

In the 18-49 age bracket, Colbert’s show slipped from opening night’s 1.38 rating to a 0.77. Fallon, meanwhile grew from a 0.88 rating to 1.24. Kimmel climbed from a 0.35 rating to 0.46.

Tonight Show last night featured Fallon’s go-to ratings-getter Justin Timberlake, as well as Macklemore & Ryan Lewis. Colbert’s show, meanwhile, had booked Scarlett Johansson and SpaceX and Tesla Motors CEO Elon Musk for Night 2, after opening with George Clooney and GOP presidential candidate Jeb Bush one night earlier. Tonight Colbert’s guest is VPOTUS Joe Biden who may or may not make news addressing speculation he’s going to make another White House run in ’16.

CBS noted Late Show jumped last night by 70% in total viewers (from 2.15M) and 60% in the demo (0.5), compared to same night last year, as well as a bigger 150% among 18-34 year olds (0.5  vs 0.2).

Previous: On his second night hosting CBS’s The Late Show, Stephen Colbert slid to a metered market 3.2/8 household rating, while NBC’s Tonight Show Starring Jimmy Fallon bounced back to  3.1/8. ABC’s Jimmy Kimmel Live followed with 1.5/4 in the timeslot according to Nielsen stats. No big surprises here.

One night earlier, the super-sized unveiling of Colbert on CBS had scored a strong 4.9/13 household rating, according to early metered-market stats, trouncing competitors as expected. And, it actually aired – which Colbert explained to viewers last night was a major accomplishment:

“It took us awhile to cut the show down to time, and when we tried to send it to the network so they could show it to you on air, the computers kept crashing. Yeah!” Colbert said at the top of last night’s show. “At 11:20, no one in the building could give me a guarantee for certain the show was going to go on the air last night. So! You can imagine how exciting that was for all of us! After CBS had plastered my face on every flat surface on the planet.”

Against Colbert’s debut, NBC’s Tonight Show clocked a 2.4/6 ; ABC’s JKL a 1.4/4.