The Batley and Spen by-election was a UK parliamentary by-election held on 20 October 2016 in the constituency of Batley and Spen. The by-election was triggered by the murder of incumbent Member of Parliament (MP) Jo Cox on 16 June 2016. Labour candidate Tracy Brabin won with 85.8% of the vote. Four parties with parliamentary representation did not enter candidates, out of respect for Cox. Nine candidates, the majority of whom were from minor far-right parties, contested against Labour, and none reached the 5% threshold to keep their deposit.