Libertarian Party has been gradually weakening and had a massive internal schism in 2022 leading to sections of the hardliners defecting to Trump and many of the moderates ending up with RFK Jr(who dropped out to endorse Trump). Nominee is a Left Libertarian and for reasons they weren’t even listed as a third party candidate on most polls or polling conglomerates until September as they weren’t in the Top 5 which further hurt their outreach.
Green Party has bounced back as they got Jill Stein’s namecred and benefited from being above the Libertarians in the rankings thanks to RFK.
Constitution Party(hard right) has been bleeding support since the Obama era, most of them have been leaving for Tea Party Republicans and the remainder is being siphoned off by Peter Solski’s Moderate Christian Party.
The PSL is the fastest growing third party right now, overtaking the Constituion Party in 2020 for 3rd place and set to potentially overtake the Greens and Libertarians if they continue infighting and bleeding support.
Cornel West exists.
It can matter in swing states if it comes down to 4 digit margins. Florida in 2000 for example, or New Hampshire in 2016