Labour revealed that Emily Thornberry had spoken to leader Ed Miliband a second time following her initial apology.
A party source said: "Ed and Emily had a second conversation.
"She thought the right thing to do was to resign. Ed agreed."
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The fallout from the General Election continues to lead most of the nation’s front pages on Monday.
Monday will see a mixture of sunshine and showers depending on where you are in the country.
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