An online system receives a request from a target user to present a poll to other users of the online system. The poll includes a question and answer options associated with the question. The online system provides the poll for display to the other users and receives a selection of an answer option from each of the other users. Also, the online system receives comments associated with the poll from some of the other users. The online system qualifies the comments. For example, the online system generates a comment group for each of the answer options that includes comments from users who selected the answer option. As another example, the online system generates an indication for each comment that shows which answer options was selected by the user having provided the comment. The online system provides the comment groups and/or answer indications to the target user and the other users.