The campaign argument could be decided by which group of voters shows up at the polls.
The Democratic nominee delivers strongest case yet against McCain campaign, prods Americans to change the direction of the country.
But in 2004, Bush got only 2 points; Kerry, 0.
Cindy McCain's past is the latest to be questioned after errors were found.
They call for a special session of Congress, but many are skeptical the session will get off the ground.
The nomination isn't his yet, but his aim now is to unify Democrats.