Studies have found that out of the more than a billion votes cast in the United States between 2000 and 2014, there were just 31 credible cases of voter impersonation. Yet Trump has claimed that millions of people voted illegally in 2016. A review by the Washington Post found only 4 documented instances of voter fraud out of 136 million votes cast in 2016 -- including an Iowa woman who voted twice for Trump. As Trump's own lawyers asserted in a Michigan court: "All available evidence suggests that the 2016 general election was not tainted by fraud or mistake." Nonetheless, [Kansas Secretary of State Kris] Kobach and Republicans across the country continue to use false claims about fraud to justify curtailing voting rights.
-- Hillary Rodham Clinton, What Happened, p. 419-420