From the website of Electoral Calculus, ” Electoral Calculus has conducted a major analysis of political attitudes and voting patterns. This is available at two different levels of local detail. The first of these is the local council ward, in which people cast votes every four years or so for their local district or borough councillors. There are around 8,800 wards in the UK, with an average of 5,500 voters in each one. Wards are naturally sub-parts of parliamentary seats, so information gained at a ward level can be very helpful for the ultimate analysis of an entire seat, and also provides valuable campaign information.” click here.