The Academy of Motion Picture Arts and Sciences confirmed Friday that it is “conducting a review of campaign procedures” in the wake of Andrea Riseborough ’s surprise Oscar nomination for the small indie film “ To Leslie.”

But her grassroots effort assembled the support of stars like Edward Norton, Jane Fonda and fellow nominee Cate Blanchett, who all publicly praised the actress’ work.

In an email obtained by Variety, McCormick provided language and details for friends to share via social media and other avenues when touting “To Leslie’s” leading lady.

“Titanic” star Frances Fisher, an Academy member, was one of Riseborough’s most vocal advocates, sharing multiple posts about her performance on social media.

Sally Kirkland famously wrote letters to voters and spoke with any available journalist to promote herself in the tiny dramedy “Anna” (1987), while Melissa Leo’s infamous “CONSIDER” ads were purchased in route to her win for “The Fighter” (2010) and intended to show her glamorous side in contrast to her work in that film as a blue-collar mother, walked just up to the edge of what was permissible.

Character actor Ann Dowd scraped about $13,000 from colleagues and her bank account to send DVDs to Academy members for her acclaimed work as a restaurant manager in “Compliance” (2012) but failed to land a nomination.