The Sleaford and North Hykeham by-election was triggered by the resignation of Conservative MP Stephen Phillips on 4 November 2016 and was when Caroline Johnson became a Member of Parliament.
 She has been the Member of Parliament (MP) for Sleaford and North Hykeham since the by-election there on 8 December 2016. 
The Sleaford and North Hykeham by-election was a by-election in England for the House of Commons constituency of Sleaford and North Hykeham held on 8 December 2016. 
 It was triggered by the resignation of Conservative MP Stephen Phillips on 4 November 2016. 
