The idea that victims of mass shootings are hired actors who stage tragedies in order to achieve political gain has drifted from obscure right-wing media into the mainstream.
Trump repeated the unproven claim to congressional leaders on Monday, and his press secretary on Tuesday affirmed "the president does believe that." There is still no proof of widespread fraud.
Alex Jones, whose radio show is carried by more than 160 stations, has also said the Sept. 11 attacks were an inside job and the mass shooting at a Connecticut elementary school never happened.
There's no evidence to support it, but the conspiracy theory that President Franklin Roosevelt knew beforehand about Pearl Harbor refuses to die, to the consternation of World War II historians.
As early voting starts, there are scattered reports of touch-screen voting machines "flipping" votes from one candidate to another. Old voting machines, not a "rigged" election, are likely to blame.
Donald Trump is insisting the presidential election will be rigged. There is about zero chance of that happening. It would require an unprecedented, bipartisan and broad-sweeping conspiracy.