This report by Martin in the NYT points out that Ohio no longer plays a critical role in U.S. presidential elections. It was critical for a Bush win over Gore, and president Obama carried it by 2 points against Romney in 2012. It is critical for Trump to win. For Hillary Clinton other states are gaining importance as they better reflect the demographic changes in the U.S. and the mix with minorities- states such as Georgia, N. Carolina, Colorado and Florida. Ohio has not seen an influx of Hispanics as other states, and is now more white, more evangelical voters, and reflects a mix that was prevalent earlier.
Original article 8 minutes, gist 1 minute