Jeremy Corbyn's wife faced claims from anti-Tory activists that she is actively attempting to split the vote in Finchley and Golders Green after she was spotted campaigning for the local Labour candidate.
Laura Alvarez was seen manning the official Labour stall for local candidate Ross Houston on Sunday. Wearing a red scarf, the Mexican businesswoman was handing out Labour leaflets to passers-by next to the Tesco store in Ballards Lane.
"Why, of all the seats she could campaign in, did Jeremy Corbyn's wife choose to come here?" asked one local Jewish activist. "It's pretty clear that Labour stand no chance of winning the seat. Not only does this look like an attempt to stop Luciana from winning - when you think things through the only party it can help is the Tories."
Last weekend an opinion poll showed Mr Freer - who has brought Theresa May and Sajid Javid into the constituency to help bolster his campaign - ahead in the seat.