"I left Labour precisely because I could not, in good conscience, do anything to facilitate Jeremy Corbyn and his ilk becoming Prime Minister. That remains my strongly held view today."
She added that Lib Dem leader Jo Swinson had "repeatedly given her assurances that there are no circumstances in which she will support Jeremy Corbyn, and the people around him, to lead our country".
This is because of Labour's "refusal to take a position on Brexit, its attitude to our national security, its outlandish economic policies and, crucially, its appalling record on antisemitism", Ms Berger added.
She concluded: "I am very confident I will not have to make the choice again between the party of which I am a member and opposing antisemitism, but, if I ever did, I have already demonstrated which choice I would make and I would never hesitate to do so again."
Mr Julius said: "She has answered a direct question. I am satisfied with this; we should all be. Every vote for Luciana is a defeat for Corbyn. We should not let him force a Jew out of parliament for the crime of standing up for Jews."
