I've been tracking the voting behaviour of people during this seimoe contest. All I can say is: people primarily vote for "moe" factors, which is for everybody subjective. When they are in doubt, they revert to popularity/fanboy or girl voting.
Example given: Patchouli won over Kyoko. Here even if both can be considered "Moe" in various ways, Patchouli will always hold the upper hand because "favouritism" and other factors (her being around longer etc).
Same could be said about match 11 where Daiyousei lost over Keine. Even Reisen failed it. Makes me wonder how a history teacher can be "moe" when even PMiSS states her lectures can be boring. It must be that "teacher-moe" thing or her chibi fanart.
Match 17, Yuyuko vs Yuuka classic. Ironic to see Yuuka winning in match 13 but not vs Yuyuko. Yuyuko, a silly also serious girl but don't see the moe part in her as a person who invokes death at her will.
TL DR, my conclusions:
- A lot of girls have the upper hand for being around longer. Favouritism is quickly used.
- Common fanon seems to rule more than personal opinions.
- Peer pressure seems to be in effect as well.
As I said to Suzuran, it is not his fault for the Seimoe contest going like this. He is just the host. But personally I would judge this contest as a fail, however still nice.