The Oscar-winner portrays the one-time vice presidential candidate in upcoming film Game Change, based on John Heilemann and Mark Halperin's book which chronicles John McCain's failed bid for the White House in 2008.
Moore spent months researching Palin in order to play her onscreen, and even though the politician came under fire for appearing to be ill-prepared to run for office, the actress is adamant her intelligence and leadership skills are undervalued.
She says, "I do think the situation that she was put in was a completely untenable one.
"People did see that she was not as prepared as they would have liked her to be. And they saw it in the various interviews that we all saw. I think she’s very canny (clever)... And she’s extremely hardworking and ambitious, and would not have reached the place that she reached without ability. You don’t get to be a vice-presidential candidate by accident."