What election was held because of a swimming disappearance?
Higgins by-election, 1968: A by-election was held for the Australian House of Representatives seat of Higgins on 24 February 1968. Higgins by-election, 1968:  It was triggered by the presumed death of then-current Prime Minister and Liberal Party MP Harold Holt. Harold Holt:  Holt spent 32 years in Parliament, including many years as a senior Cabinet Minister, but was Prime Minister for only 22 months before he disappeared in December 1967 while swimming at Cheviot Beach near Portsea, Victoria and was presumed drowned.
A by-election was held for the Australian House of Representatives seat of Higgins on 24 February 1968