Image of Party Leaders is important in deciding how voters vote; are party leaders seen as decisive? Do they represent Britain well abroad? Do they have a united government?
Blair benefited from strong leadership image.
Brown in 2010 was hurt by his poor image as a party leader, based on negative media portrayals and his indecisiveness.
Evidence suggests that party leaders are not as important as thought; in 1979, James Callaghan had 20% higher popularity polls but still lost to Thatcher.