Rosena Allin-Khan was elected as Labour's new MP for Tooting yesterday, however she used her victory speech to pay tribute to Jo Cox.
"My thoughts and prayers are with Jo’s husband and her children. She was a proud and passionate campaigner who will be desperately missed," she said.
"Jo’s death reminds us that our democracy is precious but fragile – we must never forget to cherish it. Thousands of people voted today and we are all here in recognition of our democratic values."
Allin-Khan should have become Labour's 100th woman MP, the murder of Cox means she is the 99th.
A two-minute silence was observed at the Tooting count as the death of the Batley and Spen MP cast a shadow over the process.
Allin-Khan retained the seat for Labour after it was vacated by Sadiq Khan following his election as London’s mayor.
Born and raised in the area, Dr Allin-Khan works as an emergency doctor at St George’s Hospital and is also deputy leader of Wandsworth Labour group.