THERESA MAY'S lead over Labour has slipped to just six points, a new poll reveals today - but she is still on course to increase her majority.

An exclusive survey for The Sun confirms that the election race is tightening even though the public still prefers Mrs May to Jeremy Corbyn as a leader.

3 A new poll for The Sun suggests that Theresa May will boost her majority

The poll by SurveyMonkey puts the Tories on 44 per cent of the vote, with Labour on 38 per cent.

That would give Mrs May's party roughly 346 seats - a majority of 42 - while Mr Corbyn would win 228.

If the result is repeated at next Thursday's election, the Prime Minister may feel vindicated at increasing her majority, but would fall short of the landslide victory she wanted.

3 Theresa May is cruising to victory with an increased majority, the poll suggests Credit: Getty Images

In the poll, the Liberal Democrats are on 6 per cent - suggesting they could lose every seat - with Ukip on 4 per cent.

In the crucial measure of which leader voters would prefer as Prime Minister, 58 per cent choose Mrs May with only 39 per cent preferring Mr Corbyn.

There remains a strong regional split in the parties' ratings, with the Tories crushing Labour in the South-East while Mr Corbyn's party leads in London.

The survey also suggests that the top issues for voters are Brexit, the NHS and - in the wake of the Manchester bombing - national security.

3 Jeremy Corbyn's Labour remains six points behind the Tories Credit: PA:Press Association

Mrs May and the Tories are preferred to Labour to handle terror, with large majorities backing them on the issue.

The poll was conducted among nearly 19,000 voters over the past week, and has a margin of error of 1.5 points.

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It comes in the wake of a highly controversial YouGov analysis predicting that the Tories will fall short of a majority.

That poll, based on a complex computer model, flies in the face of every other survey carried out in the past year.

Although the Tories' lead has been falling for the past 10 days, the party is still expected to stay in power after June 8.