NEW YORK — “Cougars 4 Cook.”

There it was, on a poster in the “American Idol” audience last week, after David Cook belted Roberta Flack’s “The First Time Ever I Saw Your Face.” And that slogan — not to mention the woman who hoisted it — speaks to the 25-year-old singer’s popularity with, ahem, women of a certain age.

Maybe it’s his edgy-yet-mainstream appeal, sly grin, sparkling hazel eyes, facial scruff, love for crossword puzzles, love for his mom and brothers. Or perhaps it’s the way he broke down in tears after his final performance, a rock-anthem arrangement of “The World I Know,” which he rebelliously defended from Simon Cowell’s criticism.

Somewhere down the line, the Midwest-raised former bartender became a sex symbol for scores of women who are practically old enough to be his mom. And clearly, they voted.

Linda Sharp, smitten as a schoolgirl, voted 473 times for Cook after Tuesday’s final performance show. The 42-year-old married mom used her land-line and cell phone — as well as her three daughters’ cell phones — to show support for the singer.

“The biggest thing: He’s legal, and that goes a long way,” said Sharp, who’s from Austin, Texas. “He’s 25. That’s old enough that we can openly ogle him, and we can drool over him, and it doesn’t make us feel like we could be his mother.”

The same couldn’t be said for 17-going-on-13 David Archuleta, the kid from Murray, Utah, whose booming, mature voice belies a youthful innocence and humility that, at times, bordered on painful to watch. Cook, by stark contrast, was increasingly self-assured as the series wore on.

Sharp writes “Idol” recaps on her blog “Don’t Get Me Started,” which attracts the soccer-mom set, who’ve praised the various talents of Cook. After she posted the “Risky Business”-inspired “Guitar Hero” commercial starring Cook, one comment read: “Mmmmmmmmmmmmm. Need I say more?” Another wrote: “Have I died? Is this heaven? I’ll take it!”

Apparently these women weren’t just smitten with a younger man, they were motivated, too: In a landslide victory, Cook, from Blue Springs, Mo., beat Archuleta by a margin of 12 million votes out of the record 97.5 million cast by viewers.

“American Idol” had slipped in the overall ratings this season, but Wednesday’s finale was seen by 31.7 million people — about a million more than the year before, according to Nielsen data — suggesting the show swiftly gathered momentum after it boiled down to man vs. boy.

And the biggest viewer erosion in season seven was right in Archuleta’s voting bloc. Ratings fell 18 percent among women aged 18-34; and 12 percent among viewers 12-17. Also apparently in Cook’s favor: Viewership has risen among people aged 50 and over, and the median age of an “Idol” viewer, once in the mid-30s, is now up to 42.

“I’m exposed to the Jonas Brothers and the ‘High School Musical’ crowd and all of that, but as cute as I might think they are, they do make me feel maternal — not hot,” Sharp said. “So watching David Cook, I think that’s been a huge appeal for thirty/forty/fiftysomethings that ‘We’re not dead.’ We might drive the soccer minivan, (but) we’re just picky about what perks us up.”