The Catholic bishops have come out quite strongly against abortion pushing back against the Democrats who want to minimize this issue and make it a matter of personal choice. They are quite clear that the teaching of the church is settled on this issue and that Catholics cannot support pro-abortion candidates.
Bishop Gracida created an ad (to be used by Catholics to buy ads on their local radio stations) that makes it clear that a Catholic must vote their conscience, they cannot vote for a pro-abortion candidate and Obama is a pro-abortion candidate. He couldn’t be any clearer, don’t vote for Obama.
In 2004 Kerry, a Catholic, lost the Catholic vote to Bush over the abortion issue but this year you have Catholics like Kmiec endorsing Obama as a pro-life candidate (when I saw that site I immediately thought of Isaiah 5:30). So, I think the issue is far from settled even though Obama is the most pro-abortion candidate that has ever run for president. That doesn’t seem to bother his Catholic and Evangelical voters, their conscience appears to be clear.