What is the longest Labour voting area and vice versa?
Re: Vice versa, I see what is now Epsom & Ewell consisted of parts of West Surrey and Mid Surrey in the late 1800s. West Surrey voted Tory back to an 1870 by-election where they gained a seat in West Surrey from the Liberals, and Mid Surrey never voted Liberal but was created from East Surrey in 1885, and East Surrey appears to have elected a Liberal in an 1871 by-election who lost in 1874. Cities of London and Westminster goes back pretty far, too: City of London last elected a Liberal in 1880, and Westminster last elected a Liberal in 1868 (who was in office until 1874, so later than the West Surrey by-election referenced above). All of them have been only Conservative since then (other than the Speaker in Cities of London and Westminster in the 1950s). The modern seats of Windsor and Maidenhead also appear to have a Conservative history going back to the same period, electing a Liberal in 1868 who lost in 1874.
There was a major Tory wipe-out in 1906, so if there are others older than the above, it's very few.
