Barack Obama TV Ratings ConventionPresident Obama accepted his party’s nomination last night and NBC returned to take the top spot in coverage of the Democratic National Convention. But then the numbers were stacked in the network’s favor: NBC, which didn’t broadcast any of Wednesday’s DNC because of its NFL season opener, doubled up on Thursday, beginning its broadcast live from Charlotte at 9 PM EDT — an hour before ABC and CBS. NBC’s coverage earned a 2.1/6 rating in fast nationals. That was up from last week’s one-hour live broadcast of the closing night of the Republican National Convention but down 5% from its 9:53-11:02 PM EDT coverage four years ago at the DNC in Denver. ABC landed a 1.0/3 rating last night, about flat with the final night of the RNC but down a steep 50% from its 10-11:07 coverage in 2008. CBS’ coverage last night received a 0.9/2, down from last week’s RNC and falling 31% from its 2008 broadcast on the comparative night. NBC drew 8.03 million viewers in the 10-11 PM ET slot compared with ABC’s 3.67 million and CBS’ 3.03 million. Coverage wasn’t time-zone adjusted and the numbers will likely change later in the day. NBC won the night among adults 18-49 and in total viewers.

The Democrats weren’t the only live action on TV last night. NBC’s America’s Got Talent (1,8.6) now has finalists as three more contestants progressed toward the big prize. However, last night’s show was down 18% from last week’s results show, marking a series low. ABC kicked off its primetime with Wipeout (1.3/4), up 18% from last week’s series low. It was followed by the season finale of Rookie Blue (1.2/3). The police drama was also up — a solid 33% from last week, which was a series low. Rookie Blue also saw a rise of 20% from last season’s finale. CBS had Big Brother (2.2/6) on before the DNC. It was up 16% from last Thursday’s show, which had been a summer low. The CW hade a new episode of The Next (0.3/1) that was flat with last week. CBS ran encores of The Big Bang Theory (2.0/7) and Two And A Half Men (1.7/5) earlier in the evening. Fox had a night of repeats with Raising Hope (0.7/3), New Girl (0.7/2) and Glee (0.6/2).