Is there a way to favorite / bookmark when you encounter it in the Close Queue? I didn't see the little bookmark icon under the vote count widget (but then I frequently miss elements in the math.se interface). I was using the mobile site on Firefox for Android, if that makes a difference.
Also, maybe there was a better way than bookmarking to achieve my goal, so I'll describe that too. The question had four comments, the last of which offered a dupe, and there was one answer, by a user who I tend to think of as someone will quickly write up an answer even on a likely dupe. So it's understandable that there were 4 votes to close as a duplicate. But I went ahead and read the offered dupe and the answer, and the dupe only sort of addressed the question, while the posted answer was very thorough and addressed both components of the question. So my thought was "I'll bet this gets closed. I should bookmark it and come back later and suggest a re-open". But there was no bookmark icon! Hence this post.