I voted for Kanon, Riho and Minami.
I think Kanon could win because she looks SO enthusiastic. Not great at singing or dancing, but we all know Tsunku loves these enthusiastic girls that present a challenge for trainers... Remember Koharu & Aika? lol
Riho, of course, seems like a possible winner due to her talent and potential as a performer. In terms of personality though, I felt something was lacking there... Like, I can visualize her in a different kind of idol group, but not so much in MM. Maybe a Momusu (in my imagination) should look more humble? Or maybe she just dances too well to be a Momusu
Either way, I do think MM needs better performers than the current members to keep up with the new groups.
Minami could be another of those challenges that Tsunku loves. Everyone seems to be talking about her, be it hating, loving or pitying. This means she managed to make a lasting impression, which is more than can be said for some of the other auditioners. She can't sing and she can't dance, and she looks like she's about to cry half of the time. Remember Konno?
If Tsunku still loves a challenging wild card, this girl can make it in.
The other two girls, while not much worse in singing or dancing than these three, just didnt seem to leave a lasting impression...
Note that those I voted for are not my favorites, just the ones I imagine that Tsunku could pick. I don't really have any favorites like "omg i want her to win!!", but I did like Kanon for her happy personality and sympathized with Minami in a "awww i hope she becomes confident and improves" way (which adds to why I think Tsunku would like her
).