As the flap over alleged anti-Catholic writings by two John Edwards campaign bloggers devolves into a shouting match between conservative religious voices and liberal bloggers, some members of the "religious left" say they feel – again – shoved to the margins of the Democratic Party.

"We're completely invisible to this debate," said Eduardo Penalver, a Cornell University law professor who writes for the liberal Catholic journal Commonweal. He said he was dissatisfied with the Edwards campaign's response. "As a constituency, the Christian left isn't taken all that seriously," Penalver said.

"We have gone so far to rebuild that coalition [between Democrats and religious Christians] and something like this sets it back," said Brian O'Dwyer, a New York lawyer and Irish-American leader who chairs the National Democratic Ethnic Leadership Council, a Democratic Party group. O'Dwyer said Edwards should have fired the bloggers. "It's not only wrong morally – it's stupid politically."

O'Dwyer e-mailed a statement to reporters saying: "Senator Edwards is condoning bigotry by keeping the two bloggers on his staff. Playing to the cheap seats with anti-Catholic bigotry has no place in the Democratic Party."