John Broder of the Times writes on Obama and abortion. Here is his Atrios/Begala defying lead:
WASHINGTON — Sixteen years ago, the Democratic Party refused to allow Robert P. Casey Sr., then the governor of Pennsylvania, to speak at its national convention because his anti-abortion views, stemming from his Roman Catholic faith, clashed with the party’s platform and powerful constituencies. Many Catholics, once a reliable Democratic voting bloc, never forgot what they considered a slight.
The article has an amusing headline:
Obama’s View on Abortion May Divide Catholics
His view? His view seems to be that of a typical lefty abortion-rights extremist. I'm not sure that "divides" Catholics; "defies" might be better.
Now, Obama may have appeal to Catholics on other grounds, such as his environmental posturing or oppositon to US involvement in Iraq (in his words, "ending" the war), or simply a typical Dem working class appeal. So it may be fair to say that Catholics are divided on Obama's candidacy. But the article does not (at a quick read) support the notion that Obama's view on abortion has in itself created controversy and sparked debate within the Cathiolic community.