Former British Prime Minister Tony Blair has his blood pressure taken by Nurse Paula Martin at the Alexandra Avenue Health and Social Care Centre in Harrow, London, Friday April 30, 2010, which he visited as part of the Labour Party's General Election campaign. Blair was making his first appearance on the campaign trial, and rejected suggestions that Labour was heading for a catastrophic third place in the election, scheduled for May 6.(AP Photo/Dominic Lipinski, pool)