The video clip below is fascinating. It is Sarah Palin in 1988 when she was 24 years old and starting as a sportscaster on a local television channel called KTUU-TV in Anchorage, Alaska. It includes news of "Dillingham's Beaver round-up". Don't laugh. Another sportscaster went on to become US President. His name was Ronald Reagan. Geoffrey Nunberg discusses accents here, and includes a reference to how Palin's accent has changed since she read the sports news.
Below that is a video of Palin (or Heath as she then was) in 1984 and the swimsuit section of a beauty pageant.