I just finished Double Down, an insider's account of the 2012 presidential election. It's not as entertaining as the prequel, Game Changer, but it nevertheless has plenty of meat.
Living in a very blue state means I didn't have to watch hundreds of millions of dollars' worth of campaign ads. Here is one that was played 16,000 times in battleground states. The Obamans took an inopportunely/opportunely timed photo from the Vegas runway and made it into a powerful ad.