While Julianne Moore is getting rave reviews for her physical imitation of Sarah Palin in HBO's Game Change -- the same can't be said for her accent.

While Palin hasn't released an official comment on the TV movie, sources close to the former governor told E!, "Julianne Moore's accent is terrible. She sounds more like her old 30 Rock character, Nancy Donovan, than she does Palin."

However, the Palin insiders are reportedly happy overall. The source said, "The book it's based on is rock solid. Authors John Halperin and Mark Heilmann have great sources and are top-rate journalists. From all accounts, this movie is as close to the truth as any of us are ever gonna get."