Subject Whole campaign First 2 weeks Last 2 weeks Energy & climate change 17.8 16.4 19.1 Foreign & defence 13.5 17.9 9.5 Education 17.6 14.7 20.2 Economy 14.5 15.0 14.2 Broadband 13.2 11.9 14.4 Jobs 9.0 10.0 8.1 Asylum and immigration 8.5 9.5 7.5 Health 6.1 4.8 7.4