THERESA May will go into the general election enjoying the largest poll lead of any Conservative prime minister in modern history.
The Tories lead Labour by an average of 17 points.
No other Conservative government in modern times has been this far ahead of the main opposition party 51 days from a general election.
The next biggest was in 1987, when Margaret Thatcher's government had a poll lead that averaged 14 points.
Regular polling in the UK began after the Second World War.
Since then only three Conservative prime ministers have called an election while leading by more than five points in the polls: Harold Macmillan in 1959, Mrs Thatcher in 1983 and 1987, and Mrs May in 2017.
The Tories' current lead of 17 points is not the largest ever enjoyed by a governing party at this stage before an election, however.
Tony Blair's Labour government went into the 2001 general election with a lead averaging 19 points, going on to win by a landslide.
At the equivalent point in the 2015 general election campaign, the Conservatives were roughly two points behind Labour but went on to win a majority.
