Football, “The Voice” and a strong premiere for “Revolution” kept NBC’s preseason momentum intact last week as the net rolled to victory in key demos.

Going back to its success with the Olympics in mid-summer, the Peacock has now won (or tied for the lead) in adults 18-49 for seven of the last nine weeks, according to Nielsen.

“Sunday Night Football,” with a playoff rematch pitting the Baltimore Ravens against the New England Patriots, was the week’s No. 1 primetime program with an 8.7 rating/23 share in adults 18-49 and 21.27 million viewers overall.

And among entertainment programs, editions of “The Voice” on Monday (4.7/14 in 18-49, 13.60m) and Tuesday (4.7/12, 13.57m) tied as the week’s program in the demo, and the Monday premiere impressed as the week’s No. 1 scripted telecast (4.1/11, 11.65m) — retaining most of its “Voice” demo lead-in among adults 18-49 and building on the music contest in men.

“Revolution” is off to the strongest start in 18-49 for any NBC drama in five years (since “Bionic Woman” in September 2007) and the best for any drama on any network since ABC’s “V” in October 2009. No regular 10 p.m. drama has delivered a higher 18-49 rating since ABC’s “Private Practice” in January 2010.

As for “The Voice,” while it picked up in its second week, its first two Monday outings have come in 30% lower than its most recent season, which began last February.

Overall for the Sept. 17-23 frame, NBC’s 3.0 rating/9 share in adults 18-49 was well ahead of CBS (1.9/6), Fox (1.8/5) and ABC (1.7/5). It also won in total viewers (8.4 million to 7.9 million for CBS).

Elsewhere at NBC, which led the way with original programming while competing nets mostly waited for this week, Tuesday comedy “Go On” (3.4/9, 9.28m) maintained its premiere demo score while lead-out “The New Normal” dropped by 12% (2.2/6, 6.08m). Looking closer, though, “Go On” had a much stronger 18-49 “Voice” lead-in last week (5.2) than the prior week (4.3) while “Normal’s” lead-in was flat.

The Peacock didn’t fare as well with the debut of its Thursday comedy lineup: Anchor “The Office” looked tired in kicking off its ninth and final season (2.1/6 in 18-49, 4.28m), and its “SNL: Election Special” didn’t excite auds leading off the night (1.6/5, 5.15m).

At Fox, “The X Factor” bounced back some on both Wednesday (3.6/11, 9.54m) and Thursday (3.5/11, 10.15m); the first two Wednesday segs of this season were down 19% from last fall. Thursday lead-out “Glee” dropped off in its second episode of the season (2.9/8, 7.46m) but still easily beat NBC’s comedy block.

CBS vet “Survivor” kicked off its 25th season with solid numbers (3.2/10 in 18-49, 11.37m), down 6% in the demo but up a bit in total vs. last fall’s preem. The net also wrapped “Big Brother” (2.5/7 in 18-49, 7.39m), which dropped 14% from last summer’s finale.

ABC’s telecast of the Primetime Emmy Awards (3.9/10 in 18-49, 13.26m) was down a bit in demos but up in total viewers vs. last year.