Sari Horwitz for WaPo:

But stealing an election in this country isn’t easy. In fact, experts say it’s nearly impossible given how voting works. And documented instances of voter fraud are actually very rare. Wendy R. Weiser, director of the Democracy Program at the Brennan Center for Justice, said the rate of fraud is smaller than the rate of Americans being struck by lightning.

Below, we explain why rigging an election is so unlikely.