I remember in the late 90s the Green Party in my district was on a roll, culminating in the election of a member to the California State Assembly (one of the highest posts ever held by the Greens in the US). Then came Nader’s presidential bid and its perceived role in the election of Bush, which permanently crippled the legitimacy of the local party. They’re still doing great work with voter guides, legislative analysis, etc.; but they’ll never escape the shadow of Nader and Stein.

I think the only viable path for a third party now is to start a new one from scratch, and disavow presidential bids from the outset.