Greece's conservatives have regained an opinion poll lead. This could signal the possibility of a pro-bailout government in the June 17th vote. Polls up to Saturday had shown pro- and anti-bailout parties running neck-and-neck.

Now five polls in the weekend show the pro-bailout New Democracy party leading the anti-bailout SYRIZA party between 0.5 and 5.7 points. But analysts say the race is still too close to call. SYRIZA has said it would ditch the bailout deal that has led to record unemployment and severe wage cuts.

EU leaders have warned Greece that if it takes such a step, they will cut the country's funding.

The To Vima newspaper cited a memo compiled by former Prime Minister Lucas Papademos on May 11th. The memo says Athens may run out of cash by end of June without new bailout funds.