Ed Harris and Julianne Moore in HBO's "Game Change," premiering March 10 at 9 p.m.

*This weekend, HBO premieres the anticipated film “Game Change,” which is based on the book by journalists Mark Halperin and John Heilemann, and tells the story of Sarah Palin’s roller coaster ride through the 2008 campaign as Sen. John McCain’s vice presidential running mate. [Scroll down for the promo.]

Julianne Moore, who stars as the former Alaska governor, says it was her responsibility to portray the controversial politician as accurately as possible, and most importantly, without judgment.

“Her situation was a pretty extraordinary one. Here’s somebody who had been involved in state politics, who was suddenly thrust into national and international politics and clearly wasn’t, in all of the research that I did, was not prepared,” Moore told TV critics.

Julianne Moore as Sarah Palin in HBO's "Game Change"

Not only was Palin not prepared (her disastrous interviews with Katie Couric and Charles Gibson are dramatized in the film), but she suffered a complete nervous breakdown during the campaign.  As her fame skyrocketed, pressure mounted for her to also demonstrate an ability to lead the country should something unfortunate happen to McCain.

The film, premiering March 10 at 9 p.m., shows every step of Palin’s unraveling – including moments where she was literally catatonic during prep sessions with McCain’s campaign adviser Steve Schmidt, played by Woody Harrelson.

Below, Moore says she found a way as an actress to connect to the type of pressure that sent Palin over the edge.