Next week on the Exchange, we begin by examining the South Carolina Primary and if the results may re-shape the Republican Presidential campaign. Then, nearly two years after the Affordable Care Act was signed by President Obama, we'll look to see what progress has been made and what major roadblocks lie in its way. We'll discuss Obama's State of the Union Address, talk roads and bridges and rail, with New Hampshire’s new Transportation Commissioner Christopher Clement, and end the week with the authors of a new book exploring the “dark side” of American Politics….opposition researchers who dig up the mud that campaigns sling. Join us all next week for the Exchange each morning at 9/and again at 8 pm, here on NHPR