Probably blame the national party for not giving him enough money.
This is probably the most likely scenario, if FitzGerald loses he'll blame it on the Democratic Party spending more time/money in states like Georgia and Michigan.
If FitzGerald wins (and that's a pretty big if) then he'll be gloating about how they won even when polls showed FitzGerald down twelve points, and then talk about how this is a good sign for 2016 and that Ohio is a blue state and etc. I think if FitzGerald wins he should be able to gloat for a few days since we're all saying that FitzGerald is going to lose (except for whatever text we can translate from OC's posts).
If FitzGerald somehow wins, Adam can become the Atlas guru of Ohio politics.