Battleground states decide elections, and the landscape is shifting

Battleground states get all the attention when it's time to vote in a presidential election. So why does it seem like the same few states are always in play, while others vote pretty reliably for one party or the other? What has to happen to turn a tried and true Republican or Democratic state into a battleground state? How often do these kind of shifts in how states vote take place? And how is that list of swing states going to change by the time the next presidential election comes around four years from now? Dr. Robin Kolodny, Professor and Chair of the Political Science Department at Temple University joins KYW In Depth for a really interesting conversation about what makes states politically competitive and how the landscape is changing in the United States.