Byron York nails it on the head in discussing the accusations that Senate Democrats are exhibiting an anti-Catholic bias.
People for the American Way President Ralph Neas thinks it's a low blow. He spouts opinions without supporting evidence when he says things like, "Objections to Bill Pryor’s confirmation are broad and deep and grounded in his legal philosophy and his record as a public official." He betrays his own prejudice, and the premise of his press release, with this line: “Americans cannot afford to have someone of Pryor’s extreme ideology given a lifetime position on the federal bench." That is a clear admission of a religious test for this nomination.
Democrats defend themselves by saying that our country is not a theocracy, that religious people should not use their beliefs to dictate how others live. Fine for them, that's a good argument, but it also applies both ways. Non-religious people should not be arguing that life is a non-important worthless thing that we should consider inconsequential in our respect for human rights, such as the most important right, that listed first by Jefferson: the right to life.
The Democrats argument is a ruse however, not a true argument at all. I came from a liberal religion a while back, and I've heard it all -- Christians who have deeply held beliefs should not participate in government. And yes, I heard that statement quite literally where I used to go to church, and one reason my attendance there is past tense is that I got tired of hearing them preach tolerance while vilifying legitimate Christian opinion.