In reality, that webpage at GMU does not say that 4.4% has voted early in OH. Follow the asterix.
* Ohio total 2012 early vote is a combination of available county reports listed here plus a Ohio Secretary of State report of in-person early voting only as of Friday, Oct. 5. Many county reports are not current. (Note that as of Sunday afternoon I am shy of updating nine counties because I no longer can connect to the data servers. I will try again later). The true number of voters is therefore higher than what I can verify through available data.