The problem with this answer, of course, is that the question is not theoretical: congressman and presidents have to make decisions about such issues every time, say, partial birth abortion comes up for a vote. Since Sen. Obama has voted in favor on partial birth abortion on more than one occasion, he does have a position on this issue. He just doesn't want to defend his position. He is a profile in cowardice.
Both candidates were quizzed for their views on same-sex marriage and abortion, Obama sidestepping when asked directly to give his view on when a baby began to enjoy human rights.
"I think that whether you're looking at it from a theological perspective or a scientific perspective, answering that question with specificity is above my pay grade," Obama said. [emphasis added.]
Contrast Obama's answer with Sen. McCain's:
McCain, who is opposed to abortion, replied bluntly to the same question. "From the moment of conception," McCain said. "I will be a pro-life president and this presidency will have pro-life policies."Sen. McCain's answer may not be scientifically sound but at least he is willing to state his position clearly.
More discussion of the forum can be found at GatewayPundit. Hat tip to Ed Driscoll.