A by election was held on 2 May for a vacant seat in the two-seat Mendip South division on Somerset Council.

The result is as follows:

• Rob Reed, Liberal Democrat 1,313 (Elected)
•  Ken Maddock, Conservative Party 1,122
• Michael Smyth, Green Party 200
• David Oakensen, Labour Party 139

The turnout was 36.07%; 14 ballot papers were rejected