Here is Sarah's own admission of pot use. May I say who cares?:

Palin Smoked Pot, But Said She Doesn’t Support Legalizing It. “Palin doesn’t support legalizing marijuana, worrying about the message it would send to her four kids. But when it comes to cracking down on drugs, she says methamphetamines are the greater threat and should have a higher priority. Palinsaid she has smoked marijuana -- remember, it was legal under state law, she said, even if illegal under U.S. law -- but says she didn’t like it and doesn’t smoke it now. ‘I can’t claim a Bill Clinton and say that I never inhaled.’” [Anchorage Daily News (Alaska), 8/6/06]

Palin Admitted Inhaling Marijuana. “Palin, who has admitted to inhaling as a young woman, said little. But she repeatedly asked why, if the goal was growing hemp for clothing, did the group write the initiative to make it legal to smoke marijuana to get high?” [Anchorage Daily News (Alaska), 10/26/00]