[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/05/09/art.edwards.jpg caption=" John Edwards said the math isn't working in Clinton's favor."]
(CNN) - John Edwards still isn’t backing a candidate in this year’s Democratic primary race – but it looks like he might be ready to pick a winner.
The former presidential candidate told interviewers on NBC and MSNBC that Barack Obama will probably top the Democratic ticket this fall.
Hillary Clinton has said that she can still win the nomination – but "it's very difficult to make the math work," said Edwards.
Which one of the remaining contenders is best-equipped to beat presumptive Republican nominee John McCain? Edwards tried to avoid picking between the two – then chose Obama, because he said the Illinois senator was the probable Democratic nominee.
He added that he worried the continuing campaign could take a toll on the party’s presidential chances. “I think it’s fine for Hillary to keep making the case for her,” said the former North Carolina senator. “But when that shifts to everything that is wrong with him, then we’re doing damage instead of being helpful.”
Edwards has been heavily wooed by both the Clinton and Obama campaigns since he ended his presidential run in January, but has not publicly endorsed either candidate.