http://www.animenewsnetwork.com/interest/2010-11-15/japanese-working-women-polled-on-one-piece-manga
The women's marketing firm Trenders held a poll in October to ask Japanese working women about Eiichiro Oda's pirate manga One Piece. According to the November 8 report, 41% of the 506 respondents said that they have read One Piece, although only 19% of the ones who have read it own the compiled manga volumes personally. On the other hand, 58% of the manga volume owners did have all of the volumes.
When asked which character they want as a boyfriend, the respondents gave the following answers:
1 Sanji 45
2 Monkey D. Luffy 43
3 Roronoa Zoro/Zolo 36
4 Shanks (Red-Hair) 9
5 Portgas D. Ace 8
The responses were slightly different for which character they want to marry:
1 Roronoa Zoro/Zolo 36
2 Sanji 30
3 Monkey D. Luffy 23
4 Shanks (Red-Hair) 14
5 Portgas D. Ace 8
Trenders then asked the respondents if they want to see a hypothetical live-action version of One Piece. (A live-action version of One Piece has not been announced.) 84% said they would not want to see one. However, Trenders asked those who did want to see a live-action version about their ideal cast. The top vote-getters were Shingo Katori for Monkey D. Luffy, Shun Oguri for Roronoa Zoro/Zolo, Aya Ueto for Nami, Yo Oizumi for Usopp, and Osamu Mukai for Sanji. The rankings are as follows:
Monkey D. Luffy
1 Shingo Katori 39
2 Takeru Sato 16
3 Teppei Koike 12
Roronoa Zoro/Zolo
1 Shun Oguri 18
2 Shota Matsuda/Ryuhei Matsuda (tie) 7
3 Osamu Mukai 12
Nami
1 Aya Ueto 25
2 Erika Toda 9
3 Horikita Maki 5
Usopp
1 Yo Oizumi 74
2 Kenta Kiritani/Eiji Wentz (tie) 5
3 Shingo Katori 4
Sanji
1 Osamu Mukai 10
2 Shun Oguri 9
3 Shota Matsuda 8
Trenders conducted the poll online among 506 working women aged 20 to 39 from October 27 to October 28.