Fresh from his latest win in Maine, the favourite to challenge George Bush for the US presidency has secured the financial support of some of the most powerful media moguls in the world. As John Kerry's campaign to secure the Democrat nomination - and with it a crack at the White House - continues to gather pace, it has emerged that it is being bankrolled by key executives from News Corporation, MTV-owner Viacom and Sony. The victory in Maine, Mr Kerry's 10th out of the 12 primaries in the opening weeks of the Democrat selection campaign, confirmed his position as...