It also ties his CBS show's best overnights since its 2015 premiere month.

Viewers tuned in for the first relaxed sit-down with Anthony Scaramucci.

With several days to bait his audience with his coup booking, Stephen Colbert hosted the onetime White House communications director last night — and early Nielsen returns have it as the Late Show host's best ratings ever for a Monday telecast.

In metered markets, the episode averaged a 3.1 overnight rating among households. That nearly beats the night's other series — Jimmy Fallon (1.6) and Jimmy Kimmel (1.6) — combined. The episode also ties a recent May episode as Colbert's best regularly scheduled telecast since his premiere month in September 2015.

Colbert has been hanging on tight to his winning streak among total viewers over NBC's Fallon. The last month saw two of his largest margins of victory to date.

Monday also brought a less familiar pop in the key demo of adults 18-49. The measure, where Colbert typically ranks No. 2, saw early returns in select markets give the show a winning 0.7 rating.

As for the most recent week, Colbert did not beat Fallon by as much as he's recently grown accustomed to. As for the demo, Kimmel scored second-place status to push Colbert down to third.