▁ ▁Ind ividual ▁pol ls ▁Pol l ▁results ▁are ▁listed ▁in ▁the ▁table ▁below ▁in ▁reverse ▁chron ological ▁order . ▁The ▁highest ▁percentage ▁figure ▁in ▁each ▁pol ling ▁survey ▁is ▁displayed ▁in ▁bold , ▁and ▁the ▁background ▁sh aded ▁in ▁the ▁leading ▁party ' s ▁colour . ▁The ▁' party ▁lead ' ▁column ▁shows ▁the ▁percentage - point ▁difference ▁between ▁the ▁two ▁parties ▁with ▁the ▁highest ▁figures . ▁In ▁the ▁instance ▁of ▁a ▁tie , ▁both ▁figures ▁are ▁sh aded ▁and ▁displayed ▁in ▁bold . ▁Per cent ages ▁may ▁not ▁add ▁to ▁ 1 0 0 ▁percent ▁due ▁to ▁round ing . ▁Ref us als ▁are ▁generally ▁ex cluded ▁from ▁the ▁party ▁vote ▁percent ages , ▁while ▁question ▁word ing ▁and ▁the ▁treatment ▁of ▁" don ' t ▁know " ▁responses ▁and ▁those ▁not ▁int ending ▁to ▁vote ▁may ▁vary ▁between ▁survey ▁organis ations . ▁ ▁U MR ▁and ▁Cur ia ▁pol ls ▁These ▁pol ls ▁are ▁typically ▁un pub lished ▁and ▁are ▁used ▁internally ▁for ▁Labour ▁( UM R ) ▁and ▁National ▁( Cur ia ). ▁Although ▁these ▁pol ls ▁are ▁sometimes ▁le aked ▁or ▁partially ▁le aked , ▁their ▁details ▁are ▁not ▁public ly ▁available ▁for ▁view ing ▁and ▁scr ut in ising . ▁Because ▁not ▁all ▁of ▁their ▁pol ls ▁are ▁made ▁public , ▁it ▁is ▁likely ▁that ▁those ▁that ▁are ▁released ▁are ▁cher ry - p icked ▁and ▁therefore ▁may ▁not ▁truly ▁indicate ▁on going ▁tr ends . ▁ ▁Pre ferred ▁Prime ▁Minister ▁Some ▁opinion ▁pol lst ers ▁ask