UNDATED (AP) -- Religion is supposed to be Barack Obama's strength.
Unlike many Democratic candidates before him, Obama speaks with ease about his faith.
He attends Sunday worship and knows his Bible. His supporters believe he can pry some committed churchgoers away from the GOP.
But the furor over comments by his Chicago pastor -- the Reverend Jeremiah Wright -- broadcast repeatedly on TV and viewed by millions on YouTube, could be tempering those hopes.
Experts say it's happening even within the Democratic Party and could cost Obama votes.
Barry Hankins is a Baylor University historian who studies religion and politics. He predicts that Christian right activists would bombard less-politically engaged evangelicals with the message that they should be leery of Obama because of his pastor.