Sarah Palin lost almost half of her premiere audience in the second airing of her TLC reality series Sarah Palin’s Alaska. On Sunday, the series executive produced by Mark Burnett, drew 3 million viewers. That is down 40% from the 5 million who tuned in for the debut last Sunday. In adults 18-49, Palin averaged 885,000, down 45% and also posted a similar decline, 46%, in adults 25-54. Meanwhile, AMC’s zombie drama The Walking Dead (4.8 million), continued to hold steady, down 5% from the previous week in total viewers.