Democrat Barack Obama lashed out at rival John McCain's campaign, accusing it of lying and trying to undermine his White House bid with the same tactics used to torpedo John Kerry's presidential bid four years ago.

Obama's words, among his sharpest in the presidential campaign, were in response to Republican accusations that he had made a sexist comment likening McCain's vice presidential running mate, Alaska Gov. Sarah Palin, to a pig.

The comments came as Obama looks to regain the upper hand in the presidential race after McCain received a boost from last week's Republican National Convention and his selection of Palin. Opinion polls now show McCain tied or with a narrow lead over Obama.

Obama on Tuesday mocked McCain's claim to represent a change from the unpopular presidency of fellow Republican George W. Bush. "You can put lipstick on a ... Read more »