Rosie Winterton has been the Labour Party MP for Doncaster Central since 1997.
She is a former minister and has been the shadow chief whip since 2010.
In the 2015 general election, Winterton was re-elected with a majority of 10,093. 
Winterton has held onto the post of Shadow chief whip following the leadership election of 2015. This should prove a fairly testing role as the different wings of the party begin to jostle for position.