A poll vote is calculated by unit entitlement – that is, where there is a poll vote, you calculate the result by reference to the unit entitlements attached to each vote.
For a special resolution any resolution is calculated by reference to unit entitlements, it is always a poll vote.
For an ordinary resolution you can vote either by a show of hands – one vote for each person/lot owner present and voting. Or any owner present and entitled to vote can call for a poll on an ordinary resolution, in which case the votes are calculated by reference to unit entitlement. If an owner or owners has/have enough unit entitlements, this can change the outcome of the vote.