How Do We Know?
It’s impossible to see how people voted in local council elections over the past 10 years, or to compare turnout between different areas. But the problem could be easily solved; the information has all been typed in on local websites, newspapers, etc. A simple solution, common throughout IT, would be a set of invisible tags on all local authority webpages, so that the data can be understood by computers and read by anyone who wants it. It costs nothing, it’s already compulsory for public consultation data, and now there are moves to carry it forward.