Hollywood heavyweights Paul Newman, Steve Bing, Robert De Niro and Matt Damon have boosted Senator John Kerry's presidential campaign as he bids for the White House next month. The Democrat hopeful is currently neck and neck with current US leader George W Bush in the opinion polls in the run-up to polling day on November 2. Over 850 celebrities and businesspeople have contributed to Kerry's campaign fund, of which a recent investigation in New York has revealed Bing, Damon, De Niro and Newman have all given money. Film producer Bing, who famously denied paternity of Elizabeth Hurley's son Damian and...