The 1916 Australian plebiscite was held on 28 October 1916. It was the first non-binding Australian plebiscite, and contained one question concerning military service. This plebiscite was held due to Prime Minister Billy Hughes' desire to conscript young Australian men for overseas service during World War I. It was conducted under the Military Service Referendum Act 1916.
It was a plebiscite rather than a referendum because the Australian government already had powers sufficient to introduce overseas conscription. However, due to the controversial nature of the measure and a lack of clear parliamentary support, Hughes took the issue to a public vote to obtain symbolic, rather than legal, sanction for the move. The plebiscite sparked a divisive debate that split the public and the Labor Party in the process, and resulted in a close but clear rejection of the measure. After the re-election of Hughes in the 1917 election, a 1917 plebiscite was carried dealing with the same issue softening the conditions of conscription, and with the same result.
In mid-1916, enlistment levels for the Australian Imperial Force (AIF) had fallen to the lowest level yet. High casualty rates, a longer-than-expected conflict, and a fall in enthusiasm for the war combined to create a potential policy problem for the government in sustaining the war effort. Upon assumption of office in October 1915, Hughes was eager to maintain, if not intensify, this effort. Hughes was fervently jingoistic in his rhetoric and actions, desiring that Australia prove itself in the conflict through bravery and sacrifice. He had long supported compulsory military service even before Australia's Federation, and his affection and camaraderie with troops would eventually earn him the moniker "The Little Digger".
However, despite some calls from leading politicians, the issue was divisive within Hughes' Labor Party, and he hoped conscription could be avoided through sufficient volunteerism. A mass campaign to mobilise new recruits was started in November 1915 and proved to be successful over the next six months at sustaining a steady flow of new troops to the front. Hughes had left for Great Britain (where conscription had just been introduced) in January 1916 to take part in the planning of the Allied war effort. Whilst abroad he went on extended tours on the front lines, and formed a strong personal bond with the soldiers that he visited, particularly those recovering in English and French hospitals. It became unthinkable to him that Australia should let these men down, and the strategic situation convinced him that conscription would be necessary to maintain Australia's war effort. Upon his return to Australia, he found that the domestic situation had shifted significantly, and the state of recruitment was dire. Hughes received word from Deputy Prime Minister George Pearce that troop replacements would be insufficient by December 1916 even at the most generous estimates.