John Edwards’ endorsement of Obama is enough to add the momentum needed for the Illinois senator to close the deal . Many will ascribe motives and ambitions to Edwards, but his move reinforces Obama’s credibility with working class voters, a much needed constituency. While Mrs. Clinton should decide on her own the moment of withdrawal, this reduces to a large extent her claims of electability.
Clinton’s case in recent days implies that Obama cannot win the general election. But a close look at his coalition makes him a stronger candidate because he can go beyond the Democratic base in order to win in November. Adding Edwards only makes him more appealing. The time is coming for Democrats to unite against a challenger such as John McCain, who is by far the most attractive Republican to independent voters.