In 1990 a political party presenting itself as a credible force in UK politics fought the Bootle by-election and was outpolled by the Official Monster Raving Loony Party. Within a week the "continuing" Social Democratic Party folded.
This trend continued in the 1990s - there were times when serious "alternative" parties would decide against standing in particular by-elections rather than risk losing to the Loonies and seeing morale and credibility evaporate - see Wikipedia: Official Monster Raving Loony Party - Serious attempts to gather votes.
Tonight the Loonies once again outpolled a serious party. In Ealing Southall they got 188 votes, whilst the English Democrats polled just 152. Can the English Democrats seriously continue?