Thomas Mair, accused of murdering Labour MP Jo Cox, has opted not to give evidence in his defence.
Mair allegedly shot and stabbed the mother-of-two as she arrived at Birstall library for a surgery on the afternoon of June 16 - a week before the EU referendum.
The court has heard Mair shouted "Britain first" during the brutal attack, had a stash of neo-Nazi material at his home in the West Yorkshire town and had collected a dossier on his 41-year-old Remain campaigning MP.
At the conclusion of the prosecution case, his lawyer Simon Russell Flint, QC, told the Old Bailey trial that the defendant would not be going into the witness box. He said he called no evidence on behalf of Mair.
Mair denies Cox's murder, possession of a firearm with intent to commit an indictable offence and possession of an offensive weapon - a dagger.
He also pleads not guilty to causing grievous bodily harm with intent to pensioner Bernard Kenny when he tried to stop the attack on Cox. Trial judge Mr Justice Wilkie told the jury that they could draw inferences from Mair's silence.
In his closing speech, Richard Whittam QC told of the "sheer barbarity" of Cox's death.
He told jurors: "The sheer brutality of her murder and the utter cowardice of her murderer bring the two extremities of humanity face to face."
He said that all the evidence "compellingly establishes Thomas Mair was her murderer".