Ratings Flash - Rick Kissell

ABC and CBS tied for the Monday lead among young adults, while NBC and Fox both slid farther back from the leaders. The Peacock controlled Mondays for much of the season, but ABC’s “Dancing With the Stars” has supplanted NBC’s “Deal or No Deal” as the night’s top reality show, while CBS’ “CSI: Miami” — for one week anyway — overtook NBC’s “Heroes” as the top drama among young adults.

According to preliminary nationals from Nielsen, “Dancing With the Stars” ruled from 8 to 9:30 p.m. with a 4.8 rating/14 share in adults 18-49 and 19.1 million viewers overall, followed by solid results for “The Bachelor” (3.8/10 in 18-49, 10.7 million viewers overall), which has been rising as it nears its finale in a couple of weeks. The dating show won the 10 o’clock hour in adults 18-34 (3.8/11).

CBS started modestly with “How I Met Your Mother” (3.0/10 in 18-49, 7.9 million viewers overall) and the season finale of “The New Adventures of Old Christine” (2.8/8 in 18-49, 7.8 million viewers overall) before rising in the 9 o’clock hour with “Two and a Half Men” (4.6/12 in 18-49, 13.2 million viewers overall) and “The King of Queens” (4.5/11 in 18-49, 13.4 million viewers overall). And at 10, “CSI: Miami” (5.3/14 in 18-49, 17.0 million viewers overall) was up week to week and easily led its hour in most key categories.

NBC ran second but was on the low end at 8 p.m. with “Deal or No Deal” (3.1/9 in 18-49, 10.2 million viewers overall) and then led the tough 9 o’clock hour in young adults with “Heroes” (5.0/12 in 18-49, 11.1 million viewers overall), which was also below average. Net fumbled away its advantage at 10 with the lowest score to date for reality series “The Real Wedding Crashers” (2.4/6 in 18-49, 5.1 million viewers overall).

At Fox, following a special repeat “House” (2.7/8 in 18-49, 7.4 million viewers overall), “24″ (4.0/10 in 18-49, 10.9 million viewers overall) ran fourth in the 9 o’clock hour and came in more than 25% below its average on the same night a year ago.

Of note at CW was an above-average showing at 9:30 for “Girlfriends” (1.4/4 in 18-49, 3.1 million viewers overall) with the second of two original episodes that will either serve as the veteran comedy’s season or series finale.

Preliminary 18-49 averages for the night: ABC and CBS, 4.3/12; NBC, 3.5/9; Fox, 3.3/9; Univision, 2.0/5; CW, 1.2/3.

In total viewers: ABC, 14.9 million; CBS, 12.7 million; Fox, 9.1 million; NBC, 8.8 million; Univision, 4.5 million; CW, 2.7 million.

Follow @Variety on Twitter for breaking news, reviews and more