One last (???) comment on the US presidential election...
President Barack Obama has been elected twice by a coalition that reflects the diversity of America.... But at America's founding, only white men could vote, and the franchise has only slowly expanded to include people of color, women, and ... people under 21. These maps show how American politics would have looked in that undemocratic past.
Of course, such maps give a skewed picture of the political views of 2012's white men (or whatever group is being shown). In almost all states, a razor-thin majority can assign all the state's electors to the winning candidate; a 50.1%-49.9% vote (if it survives a recount) has the same effect as a 99%-1% vote.