Vox is a far-left Soros backed partisan Democrat outfit. It is not a news source. There was already a Wisconsin thread that was active and was posted quite a bit before this article. While Vox might be allowed on the site, choosing to highlight it is akin to posting a DU article here.
I didn’t see a Wisconsin Election thread. I did a search and everything. As far as the site used, FR accepted it. There are many times when I put in a link and FR says, NOPE. So you may be incorrect on your synopsis of the site used.