NEW YORK (AP) — Americans believe Barack Obama is on track to succeed and are optimistic he can help revive the struggling economy, according to an Associated Press-GfK poll. Public expectations for his performance in office far exceed those for any president in a generation. On the eve of his inauguration Tuesday, the poll found that 65 percent of those surveyed believe Obama will be an "above average" president or better, including 28 percent who think he will be "outstanding." According to previous pre-inauguration polls, just 47 percent believed George W. Bush would be an "above average" or "outstanding" president...