Polls were introduced to Launchpad as a way for teams to conduct internal surveys. Unfortunately the user interface and feature set were always problematic. The feature never really caught on and wasn’t used much (a little over 500 polls since 2006).
A discussion[1] on the Launchpad Users mailing list saw a consensus agree that polls in their current state were not a viable feature and they should be removed rather than being fixed. As part of the December Launchpad Bug Jam I’ve taken on the task of removing them from the site.
Currently there are only four polls that are underway and the owners of the teams responsible for those polls will be notified that the feature is being removed. The data from all existing polls will be saved and made available to the teams at PollFeatureRemoved.
[1] https://lists.launchpad.net/launchpad-users/msg06098.html