Obama untouched by pastor row: poll

Hillary Clinton's popularity has plunged to a seven-year low, while her Democratic White House rival appears to have escaped unscathed from controversy over his outspoken pastor, a poll has suggested.According to the NBC/Wall Street Journal poll, Clinton received a 37 percent positive rating among the sample of registered voters, her lowest rating since March 2001, two months after she first took office as New York senator.