DURHAM, N.C. (AP) - The front porch conjures up images of rocking chairs, lazy summer afternoons and icy drinks. But not in election-year politics as Democrats John Kerry and John Edwards use the setting to reach out to voters in choreographed events with miked candidates and hand-picked audiences. "The most important thing you can do as a political leader is not to talk, but to listen," Edwards said Monday from the front porch of the split-level home of Durham's Democratic mayor, Bill Bell. It might have looked as though Sen. Edwards just stopped by for a folksy chat in this...