Actress Julianne Moore listened to Sarah Palin speeches for two months "non-stop" in preparation for playing the US Republican politician in TV film Game Change.
The Hollywood actress, 63, won an Emmy for her role in the 2012 political drama which follows the former Alaska governor becoming Senator John McCain’s running mate in the 2008 American presidential campaign.
Moore said she did not get to meet Palin ahead of filming so she had to be inventive when trying to get into the politician’s mindset.
Appearing on The Graham Norton Show, Moore said: "It was excruciating because she was so well-known and present in popular culture - I was terrified I’d get it wrong.
"I took all the music off my iPhone and only put on speeches by Sarah Palin," she continued.
"I’d put it on in the car and listen to her non-stop for two entire months. I was so afraid to hear anything else."
Directed by Jay Roach, the film was based on the 2010 book of the same name which documented the campaign for the election, which was won by Democrat Barack Obama with the current president, Joe Biden, becoming vice president.
Following the Republicans' failed campaign, some critics argued Palin was a major component in the defeat due to her far-right leaning views and lack of political experience.
Ed Harris, Woody Harrelson and Sarah Paulson also starred in the movie.
In her latest film, May December, Oscar-winning actress Moore plays a woman who became known after her tabloid romance with her husband, played by Riverdale star Charles Melton, gripped the nation as he was aged 13 when it began.
Also starring is Natalie Portman who plays an actress who is doing research ahead of playing Moore’s character in an upcoming film.
Discussing the project, Moore said: "We really worked as a team. Basically, she’s playing an actress who’s observing me, who’s an actress playing a character who has to learn things for her to imitate as the actress in the movie. It was so much fun."
The Graham Norton Show (tonight, Friday 8 December, BBC One, 10.40pm) also sees celebrity chef Jamie Oliver discuss renewing his vows with his wife and comedian Ricky Gervais reflecting on his new stand-up show.
Source: Press Association
