UK's biggest-selling newspaper endorses Brexit

"The Sun" printed the editorial - calling on Britons to vote "Leave" in an upcoming referendum on whether or not to remain in the EU - in its Tuesday edition.

The newspaper, which is owned by conservative media tycoon Rupert Murdoch, also tweeted out a preview.

"We are about to make the biggest political decision of our lives. The Sun today urges everyone to vote LEAVE," the editorial begins.

The editorial argues that the UK "must set ourselves free from dictatorial Brussels," and that the country's future would be "far bleaker" if it remained.

'Recapture our democracy'

"Our country has a glorious history," the newspaper goes on to say. "This is our chance to make Britain even greater, to recapture our democracy, to preserve the values and culture we are rightly proud of."

The Sun also accused the "Remain" camp of using scare tactics to convince voters to support the EU.

The editorial comes just as a new poll, conducted by YouGov for The Times newspaper, found that 46 percent of the country supported the idea of leaving the EU, compared with 39 percent who were in support of remaining. A separate poll in the Daily Telegraph delivered a far closer set of results. Pollsters universally failed to predict the outcome of 2015's general election in the UK.

Britons will head to the polls on June 23 for the referendum, which is raising fears of a possible break-up of the 28-member bloc.