Cambridgeshire County Council is elected every four years using the first past the post system of election. As of 2021 the council consists of 61 council seats, representing 59 electoral divisions.

County council composition

Composition since 1973

County result maps

By-election results

The following is an incomplete list of by-elections to Cambridgeshire County Council.

1973-1976

1993−1997

1997−2001

2001−2005

2005−2009

2009-2013

By-election called following the death of Leslie Sims. By-election called following the resignation of Siep Wijsenbeek. By-election following death of John West

2013−2017

By-election following resignation of Ray Manning on 2 April 2014. By-election held following the death of John Reynolds. By-election following resignation of Martin Curtis on 22 March 2015. The by-election was triggered by the resignation of Councillor Peter Lagoda, who was elected for the UK Independence Party, following his conviction for benefit fraud. By-election following the resignation of Killian Bourke on 11 May 2015. By-election following the death of Sandra Rylance. The by-election was triggered by the death of Councillor Phil Read, who was elected as a Conservative. By-election following the death of Councillor Steven Van de Kerkhove in January 2016. 2-member division.

2017−2021

2021−2025