http://www.ebookjapan.jp/ebj/special/conan/vote_kekka2.asp
eBook Japan held a popularity contest for DC on May 12, 2011. KID won because they split up Kudo Shinichi and Edogawa Conan into two different contestants, but the rankings were:
1) Kid
2) Shinichi
3) Conan
4) Ai !!
5) Ran
What I find really interesting is that Ai got almost twice as many votes as Ran.