Poll figures

Marc Ambinder links to the latest: "It's Hillary Clinton, and not Barack Obama, who has taken the biggest hit."  A key finding:

On one of the most critical questions we've been tracking for a few months, Obama showed resilience. When asked if the three presidential candidates could be successful in uniting the country if they were elected president, 60 percent of all voters believed Obama could be successful at doing this, 58 percent of all voters said McCain could unite the country while only 46 percent of voters said the same about Clinton.