I have to join Ezra in berating Romney's "crazy uncle" approach to the call and response. Getting his crowds to yell "They haven't!" has been his take since his failure in Florida last week, and it offers a pretty poignant contrast to something like Obama's "Yes we can!" refrain. It's sort of hard not to look at those and see the difference between the Democrats' vision of what's possible vs. the Republicans' tack of condemnation and negativity.
--Kate Sheppard