http://news.yahoo.com/s/ap/20080806/ap_on_el_pr/poll_obama_overexposure WASHINGTON - Barack Obama may be the fresh face in this year's presidential election, but nearly half say they're already tired of hearing about him, a poll says. With Election Day still three months away, 48 percent said they're hearing too much about the Democratic candidate, according to a poll released Wednesday by the nonpartisan Pew Research Center. Just 26 percent said the same about his Republican rival, John McCain. Obama, the 47-year-old Illinois senator who would become the first black president, has dominated political news coverage much of the year. According to an ongoing Pew study, Obama has appeared in more news stories this year and more people say they have heard more about him than McCain, the longtime Arizona senator who also ran for president in 2000. Two-thirds of Republicans and about half of independents said they've heard too much about Obama, as did a third of Democrats, a significant number. At the same time, nearly four in 10 said they've been hearing too little about McCain - about four times the number who said so about Obama. About half of Republicans, four in 10 independents and even a quarter of Democrats said they've not heard enough about the GOP candidate. The poll was conducted from Aug. 1-4 and involved telephone interviews with 1,004 adults. It had a margin of sampling error of plus or minus 3.5 percentage points.