Detroit is a place that ensures Michigan will always remain Democrat for many years to come. Its not liberal tagged but it is also not scared of liberals. So Republicans find it incredible tough to penetrate.
Dumb lines like "they raise taxes or they are liberals" mean nothing in Michigan. So my vote goes for Detroit as it really is the quiet liberal city andthey are proud of it.
Detroit is overwhelmingly (almost 95%) Democrat, but its liberalism is more populist than progressive. It is nowhere near as socially liberal as San Fran., Boston, NYC, etc.