In the United Kingdom, an election petition is the only way that the result of an election can be questioned. The Parliamentary Elections Act 1868 transferred the jurisdiction for determining an election petition from Parliament to the courts. The table lists all those petitions which came to trial.
The Corrupt and Illegal Practices Prevention Act 1883 substantially altered and strengthened the law in respect of election offences.
In some cases a petition was presented and security for costs was given, but the petitioner applied to withdraw the petition before trial.