You are letting people into your space to use it for political propaganda, because they are making a pretty thin and implausible claim to being on your team. I don't think this person is on your team. For about two weeks, they have been posting constantly about Kamala Harris and the Democrats. They can't keep their story straight as to whether they know who Jill Stein is. They constantly accuse anyone who dissents from their viewpoint of various wild strawman horrible things, repeatedly, and even after repeated clarifications.
Regardless of whether you agree with me on that or how you feel about the original issue, they're representing the anarchist community in an incredibly poor light. I think you should take some time to look over all the comments here. There's a group of people who are perfectly open to anarchism, reading and learning about it, and talking about moderation, having differences of opinion but working them out like normal humans. Then there's one person cursing at everyone and accusing them of all kinds of weird imaginary crimes, wanting to kill Palestinians on purpose with that as the only possible explanation for their statements, along with "evilism."
Are you really wanting to give this person a position of authority, to represent your community? I think that some of these political bad actors have developed the skill of putting on the right tribal affiliation so they'll get cover from genuine members of the community, even though when looked at in an objective light, they are clearly acting in toxic ways, and their motivation is pretty obviously related to the election, nothing to do with anything beyond the electoral.
You're free to grant authority in your community to whoever you want, but I don't think this person is showing any kind of good judgement or good faith, or showing your community in a positive light.