2016 Postmortem

This isn't a particularly controversial point. To the extent any Jill Stein supporters desire that progressive policy will be enacted, most will be voting for the more progressive candidate in 2020. To the extent that they believed in 2016 that there was little difference between the parties, the next four years will work wonders to thoroughly disabuse them of that notion. In the imaginary universe where HRC actually ran again in 2020, she herself would get many of these voters (though such voters would of course deny that at the present time). Which is not to say that HRC would win in 2020 in said imaginary universe -- just that 2016-Jill Stein supporters would be the least of her problems.

This doesn't mean that the party won't change. The party will of course change on many ways, as parties always do. It is just to say that such change will not be prompted by any particular desire to reach out to Jill Stein supporters, and such change may or may not intersect with the set of changes Jill Stein supporters say they want.