STOCKHOLM (Reuters) - Swedes would deliver another hung parliament if an election were held today, a poll showed on Tuesday, heaping pressure on mainstream parties to break the deadlock that has left the country without a government for nearly two months.

The anti-immigration Sweden Democrats hold the balance of power in parliament after the Sept. 9 vote and the centre-left and centre-right blocs have so far been unable to choose between doing a deal with a party that has roots in the white supremacist fringe to gain power or with each other.