Jay Cost hace un extenso análisis de lectura obligada sobre la conducta electoral del estado de Ohio. Nos ilustra con circunstancias anteriores que nos pueden servir para juzgar casos posteriores. Swing State Review: Ohio, Part 1
(...) We'll begin with Ohio, which typically has been a crucial component of Republican voting coalitions ever since the Civil War. That being said, Ohio has not been a state that the Republican Party could necessarily count on. Since 1960, it has voted with the winning party in every cycle. That's 11 in a row. Plus, Ohio's popular vote has tracked closely with the national popular vote. Over those 11 presidential elections, Ohio's vote has deviated from the national vote by a scant 2%.
Ohio behaves like this because of its diversity. It has large populations firmly rooted in one party or the other. A great example of this can actually be seen in the famous election of 1896. In Ohio, Democrat William Jennings Bryan won 47% of the vote against William McKinley, of Canton. At first blush, that seems strange. Why didn't McKinley dominate his home state? The answer had to do with the state's diversity. McKinley was the candidate of prosperous American industry, Bryan of struggling farmers. Because Ohio was a state with sizeable farming and industrial elements, it split its vote between the two.
While the nature of the Republican and Democratic bases have changed - the fact remains that both parties have large enough bases that competitive elections are inevitable. The relatively narrow slice of voters in the center of the state is thus endowed with the power to swing many elections one way or the other.