I remember that Ayumi, Tenri, Kanon and Shiori (I said Haqua at first but I got confused there) were winning when I voted. Each had about 1000 votes or so.

When the poll ended neither Ayumi nor Tenri had more than 2000 votes... wheter the girls that won had over 5000 votes. Each.

And the poll lasted one or two days. It was heavilly spammed.

Though if the anime had had any influence on the voting Haqua wouldn't be there... and Shiori would have had more votes than Mio anyways.