Hillary brings Arkansas, West Virginia and Ohio to the Dems (assuming that Crist is the VP nominee for McCain, otherwise I'd mention Florida too). Obama brings Colorado and Virginia and helps solidify a huge victory in the less-Clinton strong states.
Combined, they challenge McCain in Missouri, Kentucky, Tennessee and possibly North Carolina. McCain will be too busy defending ground to launch a big offense.
Virginia is going Dem anyway - Mark Warner is running for the Senate virtually unopposed, so the Dems will be out to vote. Neither candidate brings this in - it's an "reverse coattails".
Clinton/Obama - better ticket. She will never be his VP (assuming he actually could win). She has the experience and know-how, he can be the VP and learn so in eight years he can become the presumptive nominee.
What Kerry state is likely to defect to McCain?.
Pennsylvania and New Jersey have been iffy recently. With both of them on the ticket, they'll be safe.
I disaggree with NJ- and PA- Both are Democratic leaning States.
