I think Firecracker08 (not that I'm speaking for you
) likes Edwards/Obama because they both are appealing to wide variety of a voting audience. Let's face it...2008 will be more than just your average Dem vs Rep race. A successful candidate will HAVE to be able to appeal to the majority of their party and a good portion of their opposing party.
This is one main reason why I think Hillary can hang it up. She is NOT appealing to the Republican party - not even to moderate Republicans. So even if the Dems used the Iraq war/deaths to play on the heartstrings of America in a "republicans are evil vote for us" sort of way, it still won't be enough. You have got to have crossover appeal plain and simple.