Ohio voters have started casting ballots in the state that may again determine the US presidency, as Barack Obama struggles to thwart a John McCain victory there four years after it tipped the election to George Bush.

President George W. Bush has taken a lead over Democrat John Kerry among key groups such as Catholics and those with a high school education – largely because of voter doubts about Kerry, a poll suggests.

US president George Bush has pulled back into a tie with Democrat John Kerry in a CBS News-New York Times poll, apparently boosted by increasing optimism about the economy.

Democrat John Kerry today accused President George W Bush of a “stunningly ineffective” foreign policy and stuck by his argument that the war against terrorism isn’t primarily a military struggle.

US presidential hopeful, Democrat John Kerry, says George Bush should ask other countries for help over the crisis in Iraq.