WARSAW/COPENHAGEN, Rabi'II 26, 1437, February 05, 2016, SPA -- U.K. Prime Minister David Cameron secured the support of Poland's most powerful man on Friday for a proposed deal to keep Britain in the European Union, though an opinion poll suggested voters may still reject continued membership in a planned referendum, according to Reuters. To win a vote expected in June on staying in the EU, Cameron says he needs a pact to curb benefits for new migrant workers from EU countries, an opt-out from moves towards political union, more powers for national parliaments and safeguards to ensure Britain is not put at a disadvantage by being one of nine EU members outside the euro currency zone. Cameron achieved an important step towards that goal when Jaroslaw Kaczynski, leader of Poland's ruling Law and Justice party and the country's top decision maker, gave his blessing to the proposed arrangements for new migrant workers. Negotiators from all 28 EU countries meanwhile held a first discussion in Brussels of the package put forward by European Council President Donald Tusk. Diplomats said the day-long meeting was broadly supportive and threw up no roadblocks. --SPA 23:04 LOCAL TIME 20:04 GMT www.spa.gov.sa/w