Here is the 2008 Congressional election by county and by district:
This map has the vote in counties containing multiple districts totaled:
And this one just has lines drawn in at the loss of the total county vote:
Compare this election to the maps above. This is a bloodbath in the opposite direction as four ConservaDems are elected to seats they don't end up holding after 2010. There is a characteristic backwards-C shape of Democratic areas common to many Ohio elections: along Lake Erie, the eastern border, and along the Ohio River. The southeast is very heavily Democratic. In all of OH-6 and OH-18, Holmes and Knox are the only Republican counties. OH-16 was nearly swept by Boccieri despite containing several normally Republican counties. Kaptur and Sutton both won every county by comfortable margins. Ryan carried his part of Mahoning County with 87%.
Still, the western half of the state was heavily Republican, as was Steve LaTourette's district.
Can you do the same for the 2008 Presidential election?