Complex sentence: He stood unsuccessfully as the Liberal candidate in East Grinstead, West Sussex, in 1964, and in a 1965 by-election; he then stood in Braintree, Essex, in October 1974.
Split into simpler sentences: He stood unsuccessfully as the Liberal candidate in East Grinstead, West Sussex, in 1964, and in a 1965 by-election. He then stood in Braintree, Essex, in October 1974.