The Conservatives have gained two points while Labour have lost an equal amount, putting the Tories ahead for the first time in nearly three years.
35% would vote Conservative if an election were held tomorrow, followed by 33% for Labour, 15% for UKIP, 7% for the Greens and 6% for the Liberal Democrats.
Prime Minister David Cameron has broken even with a net approval rating of 0%, the highest score since his EU veto at the end of 2011.
Labour leader Ed Miliband remains far behind with -28%, ahead of Liberal Democrat leader Nick Clegg on -44% but behind UKIP leader Nigel Farage on -24%.
|% Approve||% Disapprove||Net rating||Net rating (own party)|
Opinium Research carried out an online survey of 1,975 GB adults aged 18+ from 17th to 20th February 2015. Results have been weighted to nationally representative criteria.