There is no theoretical upper limit to the size of districts in STV, and they may not even be needed at all: Thomas Hare's original proposal was for a single, nationwide district. In theory, STV could allow for the election of particularly small minorities provided they secure a quota's worth of votes, if very large districts were used. The 1925 Irish Senate election used one district to elect nineteen places and the Cork Corporation used a single 21-seat local electoral area until subdivided in time for the 1967 local election.