I wonder if he picks people up in the middle of the year.

This makes me curious about how the Slug Club operated during the year Snape was Headmaster, if it did operate at all. It would make sense for Slughorn to now try to ingratiate himself to the Death Eaters, and by extension, Snape (as things appeared at the time) by restructuring the club to have more members who were the children of Death Eaters. If this were such a case, I would imagine Draco might be near the top of such a list.

Antoinette/Gryffindor