Not sure if that fits in here, but I was playing around with Géoclip (the thing that comes closest to DRA for France) and realized I could very easily gerrymander my city of residence (which voted 55% Sarkozy) into a 57% Hollande parliamentary constituency. All this without having to split any municipality and without even making it too ugly!
For those who wonder, my city (Vélizy) is the easternmost edge of that area. The big left-voting cities of Guyancourt and Trappes are on the western side.
The population is 3.4% over its ideal size, which is perfectly fine by French standards.
