My mistake, I read Iowa not Ohio.
That was partly our fault. We sort of got into a tangent about Ohio.
As for Iowa, it was a Republican state for most of its history. In the history of the current two-party system, 1912 was the first time Iowa voted Democratic in a presidential election. Prior to 1964, I'm pretty sure Iowa was always more Republican than the nation as a whole. Since then, things have been more interesting:
More Democratic: 1964, 1972, 1984, 1988, 1992, 1996, 2004, 2008, 2012
More Republican: 1968, 1976, 1980, 2000, 2016, 2020
