NBC has won another Tuesday in key demos — its record-setting 18th victory on the night this season — behind “The Voice,” another strong showing by sophomore drama “Chicago Fire” and gains for its new comedies “About a Boy” and “Growing Up Fisher.” ABC’s own rookie comedies in the same 9 o’clock hour, “The Goldbergs” and “Trophy Wife,” also edged up.

CBS was a close second in demos while easily winning in total viewers.

According to preliminary national estimates from Nielsen, NBC opened with another dominating perf by “The Voice” (3.5/11 in 18-49, 13.0 million viewers overall), which was in line with last week and won its hour in just about every demo. It was followed by first-year laffers “About a Boy” (2.2/6 in 18-49, 8.0 million viewers overall, pictured) and “Growing Up Fisher” (1.8/5 in 18-49, 6.8 million viewers overall), which rose 10% (0.2) and 6% (0.1) respectively week to week and continue to look stronger than last year’s combo of “Go On” and “The New Normal”; they placed second in their timeslots.

And at 10 p.m., “Chicago Fire” stayed hot (1.9/6 in 18-49, 7.1 million viewers overall), winning its time period in 18-49 and matching the previous week’s score when it faced stronger CBS drama competition (a repeat “Person of Interest” instead of the original that aired last night). This was the fifth straight original episode that “Fire” has matched or topped the prior telecast’s 18-49 rating.

NBC notes that this was its 18th Tuesday triumph in adults 18-49 this season, the most for the network in any year in the 26-year history of Nielsen’s current People Meter sample.

Elsewhere, CBS was led by “NCIS” (2.4/7 in 18-49, 16.8 million viewers overall) and “NCIS: Los Angeles” (2.3/6 in 18-49, 14.2 million viewers overall), with the former down a tick and the latter up 10% (0.2) vs. their prior originals of two weeks ago; in total viewers, they were the top shows of the night. Closing things out for the Eye was “Person of Interest” (1.8/5 in 18-49, 11.0 million viewers overall), which was up a tenth from its most recent original, finishing closely behind “Chicago Fire” in 18-49 while winning the hour in adults 25-54 and total viewers.

ABC rested “Marvel’s Agents of SHIELD” but got decent tune-in for its Marvel special “Marvel Studios: Assembling a Universe” (1.4/4 in 18-49, 3.9 million viewers overall). From 9 to 10 p.m., “The Goldbergs” (six-week high 1.6/5 in 18-49, 4.7 million viewers overall) and “Trophy Wife” (1.0/3 in 18-49, 3.1 million viewers overall) were up a tenth apiece from last week, and 10 p.m. drama “Mind Games” was down by a tick (0.7/2 in 18-49, 2.2 million viewers overall).

At Fox, “Glee” celebrated its 100th episode (1.1/3 in 18-49, 2.8 million viewers overall) by rising 22% (0.2) from its series low of the previous week, but that still left it fourth among the Big Four in 18-49. It was followed by a repeat “New Girl” (0.7/2 in 18-49, 1.6 million viewers overall) and a new “Brooklyn Nine-Nine” (1.1/3 in 18-49, 2.5 million viewers overall), the latter of which nearly delivered the same demo score as last week when “New Girl” aired an original.

At CW, both “The Originals” (0.7/2 in 18-49, 1.6 million viewers overall) and “Supernatural” (0.8/2 in 18-49, 1.9 million viewers overall) were low.

Preliminary 18-49 averages for the night: NBC, 2.5/7; CBS, 2.1/6; ABC, 1.1/3; Fox and Univision, 1.0/3; CW, 0.7/2; Telemundo, 0.5/1.

In total viewers: CBS, 14.8 million; NBC, 9.1 million; ABC, 3.3 million; Univision, 2.7 million; Fox, 2.4 million; CW, 1.8 million; Telemundo, 1.3 million.