For a contingent of Sanders supporters who remain convinced the primary was rigged and distrust the media and the Democratic establishment, it isn’t much of a leap to believe Clinton has been dishonest about her health. Some have even raised the possibility that she’s gone to great lengths to conceal the truth: In a video posted to Facebook on Monday that has been viewed 11,000 times, Sanders supporter Adryenn Ashley suggests that Clinton may have used a body double after leaving the memorial to conceal health problems. “I think she’s way, way, way sicker than just pneumonia,” Ashley says in the video.

Speculation that Clinton has employed a body double to hide illness has spread on right-wing websites in the aftermath of her swift departure from the ceremony last weekend. The Clinton campaign dismissed the idea as an absurd conspiracy theory, but that won’t put an end to the rumor—or others like it—for anyone inclined to believe. “There is something the campaign is hiding,” Ashley, who identified herself as a progressive, told me in an e-mail. “They want to call any question of her health a conspiracy theory. It’s not a theory, it’s a fact.”

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