Sometimes, Sen. Barack Obama just can't win. A Pew Research poll shows 10 percent of voters believe the false rumor that he is Muslim. His campaign has reacted by trying to downplay support from Muslims -- including a clumsy attempt to cleanse a TV shot by barring two women in head scarves from appearing behind him at a rally in Detroit.

So now some Muslim voters are feeling shunned. He has visited churches and synagogues, but has yet to appear at a mosque.