As everyone is probably aware by now, the biggest problem with polls is that they make posts permanently uneditable. The instant you publish, the edit button is grayed out and you can never fix any typos, correct inaccurate information, change the poll duration, or change reblog permissions.
Editing tags was also seemingly impossible (which is a Big Problem given the banned tags situation is still very much a thing), but luckily there’s a workaround: the mass post editor! I rarely use this feature and often forget it even exists because it’s clunky and annoying to deal with, but it’s better than nothing.
Step 1: Open the Mass Post Editor. To access it, go to your activity or drafts page on desktop. You should find the link at the very bottom of the side menu. As far as I know this editor is not available on mobile.
Note: If you want to edit a post that’s NOT on your main blog just append the sideblog name to the end of the link.
Step 2: Find the post you want to edit and click on it. This is easier said than done and the part that makes the mass post editor so annoying. All you’re given is a cluttered wall of thumbnail previews with tiny snippets of text and no way to search or filter posts other than by the month they were published. It’s a mess. If the post you’re trying to find is not recent, your best bet will be using the browser search (Ctrl+F on Windows, ⌘+Z on Mac), however, this will only search within the tiny snippet of text in the previews, not the whole post.
Step 3: Edit the tags. This part should be pretty straightforward. Click the “edit tags” button in the top menu to delete an existing tag (note it will only list the first 20 because those are the only ones that are indexed and searchable) or “add tags” to add a new tag to the post.
That’s it, you’re done! Obviously this method works for editing tags on any post, not just polls, but imo there’s very little reason to go this route unless you’re desperate.