Final answer:
Under the Wartime Elections Act 1917, recent immigrants from enemy countries, conscientious objectors, and citizens of enemy birth or those speaking the enemy tongue were denied the vote.
Step-by-step explanation:
The groups that were denied the vote under the Wartime Elections Act 1917 were recent immigrants from enemy countries, conscientious objectors, and citizens of enemy birth or those speaking the enemy tongue. Specifically, the Act disenfranchised "those of enemy birth, those of European birth speaking the 'enemy tongue'" and deprived conscientious objectors of their right to vote. These measures were part of a larger effort during World War I to ensure support for the Borden government's conscription policy.