UPDATED: The premiere of TLC’s Sarah Palin’s Alaska last night drew 5 million viewers to become the most watched series premiere ever on the cable network. The documentary series starring the former Alaska governor and vice-presidential candidate and executive produced by Mark Burnett also set a record for a TLC series debut in households with a 3.5 rating. Its 18-49 delivery was 1.6 million. Sarah Palin’s Alaska posted triple-digit rating gains vs. the network’s primetime average in the 9 PM slot, where it faced NBC’s Sunday Night Football, ABC’s Desperate Housewives and CBS’ Undercover Boss.

Meanwhile, AMC’s zombie drama The Walking Dead is not slowing down. Airing at 10 PM, the show’s third episode last night averaged 5.1 million viewers, up 9% from last week. In adults 18-49, it held steady at 3.3 million.