Donald Trump won the US presidential election in a stunning victory that confounded pollsters - although his rival Hillary Clinton refused to concede on Wednesday.The Republican took the key swing states of Florida, North Carolina and Ohio early this morning, as he marched towards the White House.In an extraordinary development, Mrs Clinton did not concede the election - despite several news networks calling it for Mr Trump. Her campaign said it was ‘too close to call’.The Republican surpassed expectations and confounded pollsters in Florida, where Mrs Clinton had been expected to win following a surge in the Hispanic vote.Mrs Clinton’s hopes of a swift victory faded as the Republican picked up a series of states early on and maintained his momentum.Mr Trump’s unexpected success in Florida was backed up by wins in the key states of Ohio, North Carolina and Pennsylvania.