There were the GREEN, SOCIALIST WORKERS, SOCIALIST, and WORKERS WORLD parties that all "took votes" from Gore.
The dirty little secret is that the Democrats HAVE to court the hard left Socialist vote while pretending to middle American that they are moderate and that "socialism" doesn't describe their agenda and besides, it isn't REALLY a dirty word...
The “Natural Law Party” was also a weirdo quasi-leftist outfit based on “transcendental meditation”.
“Communist Party USA” which hasn’t run it’s own candidate for POTUS since 1984 endorsed Gore, Kerry and Obama (unsurprisingly it’s wikipedia entry fails to mention this). Pity for them there is such disunity on the extreme left with several tiny parties.
In 2012 besides the Green party (4th place nationally) we had the “Peace and Freedom Party” (6th) (active in Cali) who nominated Rosanne Barr and Cyndi Sheehan. Former rat Mayor of Salt Lake Rocky Anderson ran on the “Justice” ticket (7th). Plus “Socialism and Liberation”, “Socialist”, “Socialist Equality” which got hardly any votes due to very limited ballot access. “Worker’s World” didn’t run anyone. Their website is crowing about the election of some pinko as Mayor of Jackson MS last week.
All of them combined didn’t equal the amount of Paulbot votes Romney lost to Gary Johnson.