public function deletePoll(Poll $poll): bool
    {
        if (empty($poll->getAdminKey())) {
            throw new \Exception(sprintf('Admin key not available. Poll %s cannot be deleted.', $poll->getId()), 1443782170);
        }
        return $this->doDelete('/api/v2.0/polls/' . $poll->getId() . '?adminKey=' . $poll->getAdminKey());
    }