Stephen tours Independence Park in hopes of tonguing the crack of Liberty. (4:17)
Tags: Philadelphia, on location, Chili-Delphia, Benjamin Franklin, founding fathers, Declaration of Independence, Constitution, Liberty Bell, mascots
Obama wooed Pennsylvania's blue collar bowling vote by hitting the lanes -- which was followed by a response from Hillary's campaign. (3:31)
Tags: Indecision 2006, Barack Obama, Hillary Clinton, Pennsylvania, primaries, Philadelphia, Liberty Bell, Benjamin Franklin, Doritos, DonorsChoose.org, Mike Gravel