Labour winner Emma Lewell-Buck, a married social worker, was cheered by supporters as she became the first female MP in South Shields.
From the podium, she said:
I will help get people back to work, champion our wonderful town and never give the Tory Government one moment's peace.
More top news
The victim was hit as she crossed the road at a pedestrian crossing in Tulse Hill.
The rate of Consumer Prices Index inflation rose to 3.1 per cent in November, from 3 per cent in October.
Mr Lewis was accused of squeezing a woman's bottom while giving her a hug at an event at the Labour annual conference.