The Labour candidate beat Mansfield's conservative MP Ben Bradley into second place with a majority of 51,708 seats.
Claire Ward who was previously the MP for Watford is currently a Non Executive Director of Sherwood Forest Hospitals Trust and was appointed chair in October 2021.
It's understood she is now likely to step down from that position to concentrate on her new role.
The full results of the vote are as follows;
Claire Ward (Labour) 181,040
Ben Bradley (Co)129,332
Frank Adlington-Stringer (Green) 50,666
Alan Graves (Reform) 49,201
Matt Relf (In) 23,359
Helen Tamblyn-Saville (LD) 15,970 (3.6%)
Mansfield MP Ben Bradley, who is also the leader of Notts County Council, spoke to Mansfield 103.2's Tony Delaunty straight after the declaration and said he was disappointed with the result but proud of his team.
You can hear the full interview below