Now that Rick Santorum has suspended his campaign and the race is on between President Obama and Mitt Romney, an unprecedented media war has begun. We've seen big media battles before. But in money, in woman- and man-hours, and in technical and strategic sophistication, this will be the biggest ever. Especially in Pennsylvania and other swing states, you'll see television ads from both camps, and from the semianonymous political action committees that have become the coin of the 2012 realm.  Read more