 to see him take such good care of his son and his family. It's the first time 20-year-old Heather Smith has been old enough to vote in a UK general election. She lives in the north-west England seat of Hazel Grove, and the kind of voter the Lib Dems need to wrestle the seat from the Conservatives. Meanwhile, 560km away, at the southernmost tip of the British mainland, is Penzance in Cornwall.