The last time a non-Republican, or non-democrat won an electoral vote was 1968, George Wallace.
FR favorite got 0.5% of the vote in 2000. Ross Perot did much better, but likely threw 1992 to Clinton.
Greens, Libertarians, and plenty of other 3rd party fantasies pass almost unnoticed by the voters.
Reality check is a good thing, from time to time. As always the next Potus will be a Republican or a democrat.