Sleaford and North Hykeham is a parliamentary constituency in Lincolnshire, England which elects a single Member of Parliament (MP) to the House of Commons of the UK Parliament. It has been represented since 2016 by Dr Caroline Johnson, who is a member of the Conservative Party. The seat was created in 1997 and has always been represented by Members of Parliament (MPs) from the Conservative Party; like all British constituencies, it elects one candidate by the first-past-the-post voting system. Johnson became the MP for the constituency after a by-election in December 2016, following the resignation of the previous MP for the seat, Stephen Phillips. The constituency is considered a safe seat for the Conservatives.