Sky News 
Sunday, Nov 2, 2008
Barack Obama has promised to “change the world” if he is elected US President.
With just three days to go he and his opponent John McCain are touring key states in an effort to woo undecided voters.
Senator Obama is still almost seven points ahead in the Real Clear Politics poll of polls, but the gap has narrowed slightly.
At a rally in Henderson, Nevada, he warned his supporters against complacency.
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“At this defining moment in history, you can give the country the change we need,” he said.
Sky News’ Michelle Clifford, who was at the rally, said Mr Obama was trying to leave nothing to chance.
“He’ll be using every ounce of his resources to get the vote out,” she said.
At the same time Senator McCain was rallying his followers in Newport Beach, Virginia.
In a usually safe Republican state, which is threatening to go to the Democrats, he asked for help on the home stretch.