Beaten by-election candidate George Galloway is to legally contest the result of the Batley and Spen poll.
Mr Galloway – a former Labour and Respect MP – came third in the election.
He polled 21.8 per cent of the vote.
Labour squeezed home with a majority of 323.
After the declaration Mr Galloway said he had “multiple grounds” to overturn the poll.
He said: “The whole election campaign was dominated by lazy and false tropes about our campaign, about the thousands of people that voted for us, about their motives for doing so, in a way which defamed them as much as it defamed me.
“So, on multiple grounds we will apply to the courts for this election result to be set aside.”
