I muted his account months ago, but still got the retweets. I voted yes, which seems to be getting momentum and is now leading by a very comfortable margin.
I have him blocked. Surprisingly, I can still click through and it looks like I could vote if I wanted to (which feels like a bug, but, eh, probably not Twitter's biggest issue right now).
If you mute, the rewtweets will be masked unless you reveal them. I saw this one because it was on HN before it closed. I never saw the previous polls until they were closed.