The New York Times tells us "Jill Stein, the #Green Party nominee, is polling at about 1 percent nationally, according to New York Times polling released last week. Same with Chase Oliver, the #Libertarian Party candidate.
"But their presence on the ballot in just a few states could take just enough votes away from the major party candidates to tip the balance of the Electoral College and the election, in what is known as the “spoiler” effect."