Electionate runs down the county-by-county demographics in Illinois. Bottom line:
Perhaps no state is more representative of the national GOP than Illinois. No, it doesn’t include sparsely populated, Paul-friendly western highlands or the Mormons of greater Utah, but it has nearly everything else. The Chicago area is among the wealthiest in the country, while southern Illinois, which is physically and politically closer to Alabama and Mississippi than the Windy City, is dominated by culturally southern, working-class, evangelicals. Compared to Ohio and Michigan, Illinois is slightly less evangelical and more affluent, which points toward a narrow Romney advantage.
And what has been remarkable this year is how demographics have determined the final vote almost perfectly so far. No candidate has shifted his demographic appeal much, and no momentum has moved voters in one candidate's direction for very long. That's why this seems so endless. It's a movie without a plot; it's a themeless pudding.