Weekly Shōnen Jump occasionally organizes popularity polls of One Piece characters and publishes the results. The results will also be published later in the One Piece Volumes.
1st Poll (1999): The poll ran for 2 to 3 weeks after Chapter 49. The total number of votes was 36,000. In the first poll, many of the Cover Page animals were listed on the poll. Ganzack is the first non-canon character who was voted by the people.
2nd Poll (2002): Total votes 51,873. Eiichiro Oda was included in the poll and ended up taking the 25th position.
3rd Poll (2006): Total votes 50,804. Results from position 51-99 published only in Volume 43, not in the Weekly Shōnen Jump.
4th Poll (2009): Total votes 42,116. The results first published on WSJ Vol. 49 2008. The 4th poll was the longest with more than 200 characters listed in positions 1-122. Japanese voice actress Mayumi Tanaka and the majority of the Joke Characters appeared on the poll.
5th Poll (2015): Total votes 69,472. The results were published in Chapter 771. The top ten characters were featured in the chapter’s colored cover page.
6th Poll (2017): Total votes were approximately 80,000. The results were published along with Chapter 874. Unlike the previous two polls, only 102 characters were included into the list. Luffy and the other non-Straw Hat top 20 characters were featured in the chapter’s cover page to indicate the series’ 20th anniversary.