Electability is an issue, and one that both Obama and Clinton are likely to use to woo the superdelegates. But our polling suggests that neither candidate has a demonstrable advantage to tout.
Obama's high favorable ratings are more influenced by how he makes voters feel than by specific characteristics they attributed to him. Clinton's image, in contrast, is driven by opinions about her own qualities.
About two-in-five voters now say they have received a pre-recorded call about the campaign. Meanwhile, Democrats are far more engaged in campaign activities than are Republcians -- including donating money to a candidate.
While her Bosnia flap made Clinton the newsmaker of the week, she continues to lag behind Obama in terms of public visibility. Both candidates, despite recent negative news, have seen little change in their favorability.
Fully 85% of Americans say they heard about Obama's speech, and 70% have heard more about him in the last week than any other candidate. The impact of events on Obama's image appears to be mixed.
Obama's personal image remains more favorable than Clinton's - and he retains a 10-point advantage over her in the race for the nomination. But certain beliefs and attitudes among older, white, working-class Democrats are associated with his lower levels of support among this group.
The balance of party identification in the U.S. electorate now favors the Democratic Party by a decidedly larger margin than in either of the two previous presidential election cycles including in some key swing states.
Americans are paying close attention to all aspects of the election this year, but the most widely recognized item involves rumors that Obama is a Muslim.
Every week since November, 2007, the most covered news story has been the election, and the public has taken notice. Almost half of Americans (47%) listed it as the single news story they were following more closely than any other, up from 10% last November.
If they turn out to be their party's nominees, both Barack Obama and John McCain need to educate voters about themselves in some pretty basic, and challenging, ways.