Almost half of voters believe David Cameron should resign as Prime Minister if the country opts to leave the European Unions, according to a new opinion poll.

The survey by Ipsos MORI found 48% thought he should quit if there is a vote for Brexit on June 23 compared to 44% who thought he should carry on.

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Opinions were divided along party lines with 63% of Conservative supporters happy for him to carry on in No 10 as against just 38% of Labour supporters and 22% of Ukip supporters.

Gideon Skinner, head of political research at Ipsos MORI, said: "David Cameron is crucial to the Remain side campaign as the most important politician to how people will vote, but the flip side of this is that many Britons think his premiership should end if the country votes for Brexit."

Ipsos MORI interviewed 1,023 adults aged 18 and over across Great Britain by telephone between March 19 and 22.