The two candidates for the US presidency have been making the most of the final day of campaigning. George W. Bush and his Democratic challenger John Kerry criss-crossed crucial swing states in a bid to pick up last-minute support. The pair remains neck and neck in several new polls.At an airport rally in Ohio, the Republican president invited those in his rival’s camp to think about changing their minds. “If you are a Democrat, who believes your party has turned too far to the left this year, I ask you to come stand with me,” he told a cheering crowd. John Kerry was also on the tarmac, wooing the undecided. A speech in the key state of Florida was one of his final opportunities to convince Americans to send the Bush administration packing. “This is the choice. This is the moment of accountability for America and it is the moment where the world is watching what you are going to do,” he told supporters in Orlando. Nearly two million people have already been casting their ballots in early voting in Florida, hoping the state will not produce another election fiasco, as happened last time round in 2000.