OH has a decidely GOP Legislature with a Dem Governor, sounds like Incumbent-Protection to me...
My guess is, Columbus is currently split in three and is growing fast. I bet the district lost comes up from the North, and they will merely hand all of Democratic Columbus to Kilroy now that there is a Democrat to protect in the area. The Republican seats will move towards the lost seat in the Iron Belt area.
Not any more. The 'Rats took over the House side of the state government. OH mostly mirrors the national trend, going left. We have a 'Rat governor who absolutely slaughtered a trueconservativeTM in '06, and basically took over all of the state's elected posts (which is why you have 'Rat operatives in government running background checks on ordinary citizens who question The Holy Messiah Obomba). The 'Rats now outnumber 'Pubs in the Congressional delegation.
The state has turned blue, no question about it. Unemployment is going through the roof and jobs are leaving the state in droves, but the Governor spends a huge amount of time on the campaign trail turning handsprings for Obomba. It's turning into a twin of Michigan from an economic and political viewpoint.