Priestley Conservative Tuke Conservative The 1900 Edinburgh and St Andrews Universities by-election was a parliamentary by-election held in Scotland on 3 May 1900 for the UK House of Commons constituency of Edinburgh and St Andrews Universities.

The by-election was held to fill the vacancy caused by the death on 11 April 1900 of 70-year-old Conservative Party Member of Parliament (MP) Sir William Overend Priestley.

He was a Yorkshire-born, Edinburgh-educated, pioneering psychiatrist based at the Royal Edinburgh Hospital, who had been knighted in 1898.

[6] The nomination process was held in the Senate Hall of the University of Edinburgh on 3 May 1900, where the Principal Sir William Muir presided over a gathering of only about 20 people.

At the 1906 general election, he was re-elected in a two-way contest with John Strachey (journalist), a Free Trader.