[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/images/01/21/art.mccainthumbs.gi.jpg caption="Sen. McCain has won the GOP's South Carolina and New Hampshire primaries."]
MYRTLE BEACH, South Carolina (CNN) - Well, it's obvious who the Democrats think will win the Republican nomination: They're all talking about who will run strongest against John McCain.
This is new - and it's likely the result of his South Carolina win on Saturday. Now each are laying out their plan on who can beat a Republican candidate who has repeatedly shown he appeals to independents.
Clinton is holding strong on her mantra that she's a fighter who has withstood the "Republican attack machine." Obama and Edwards, on the other hand, are stressing their broad appeal to voters not usually inclined to vote for a Democrat.
And Obama is injecting Iraq in the debate - his strongest issue - saying he can draw a powerful contrast with McCain on Iraq. On the other hand, John McCain is likely to win any debate on national security - it's his strongest issue, and he speaks on it with a degree of authority that virtually no other politician has.
Related: Watch Edwards discuss his strategy against McCain
- CNN Senior Political Analyst Bill Schneider