The last three third party candidates who won more than one state were Strom Thurmond, George Wallace and Theodore Roosevelt.
The first two won the south on account of regional anger at the civil rights movement.
Roosevelt split the vote. 50.6% of the country voted for the Republican candidate or a former Republican, but the Democrat won a landslide with only 41% of the popular vote and 81% of the electoral college vote.
The closest a third party candidate has ever come to winning is Breckenridge, who got 18% of the popular vote and 23.8% of the EC vote running as a Southern Democrat because the south didn’t like Stephen Douglas (who got 29.5% of the popular vote but only won a single state).
Voting third party basically doesn’t work. Any time its been significant, it’s just caused a spoiler effect.
If that’s something that regularly happens in the US, do you have any examples from the last decade, instead of three examples from 55-60 years ago?