Here's a state that'll be tough to predict, but that I seem to have a strange talent for predicting right if the primary is any indication:
Tippecanoe will go Obama, though it will be extremely close. In 2004 Bush did only 1% better statewide than he did in the county, BUT the massive swing in Indiana towards Obama has occurred among industrial workers such as are found in Lafayette. And Purdue turnout will be vastly greater this time around.
Marion needs a deeper shade of red.
I spend a great deal of time in Porter County, though mostly in the Valparaiso area, which appears to be heavily conservative Republican. Unless there are some liberal areas with which I'm unfamiliar, I can't see it going Obama. This was a Goldwater county, though oddly enough it was also a Clinton '96 county.