text:  With four days to go until Britain's general election, Keir Starmer, the leader of the opposition Labour Party, has urged his supporters not to be complacent, insisting the final steps are the hardest. The Conservative Prime Minister, Rishi Sunak, has called on voters not to give Labour unchecked power. Opinion polls give Labour a lead of around 20 points. The Conservatives have been in government for 14 years.