Stein and others are seeking an audit and recount of the voting results in Michigan, Pennsylvania and Wisconsin, following reports that voting security experts alerted Hillary Clinton's campaign to the possibility of hacks in key counties in those states.
President-elect Donald Trump claimed Pennsylvania and Wisconsin -- wins that helped push him comfortably over the threshold of 270 Electoral College votes needed for victory -- while Michigan remains too close to call, more than two weeks after Election Day
Filmmaker Joss Whedon tweeted late Tuesday, "Demand an audit. Make the call," with a picture of Clinton reading "She Won."
It's an ironic twist from just a month ago, when Trump was cautioning that the election results would be "rigged" and that he may not accept the outcome.
Stein, who ran as an independent, third-party candidate in 2012 and 2016, does not stand to benefit personally from the proposed recounts -- she received only 1.1% of the vote in Wisconsin and less than 1% in Pennsylvania.
She launched her effort after computer scientists reportedly told Clinton campaign officials that the election may have indeed been rigged -- in Trump's favor.
Clinton fell about 27,000 votes shy of Trump in Wisconsin and 60,000 in Pennsylvania -- razor thin margins in both states, which together account for 30 Electoral College votes. Votes still are being tallied in Michigan, which CNN has not called for either candidate yet.
However, famed political statistician Nate Silver was skeptical, tweeting that the voting patterns reportedly questioned by computer scientists "are well-explained by demographics -- not hacking."