Final answer:
Stanley Bruce was the first Australian politician to broadcast on radio.
Step-by-step explanation:
The first Australian politician to broadcast on radio was Stanley Bruce. He made his first radio broadcast on April 19, 1924, while he was the Prime Minister of Australia. Bruce used the occasion to address the nation directly, discussing important political issues and initiatives. The first Australian politician to broadcast on radio was Joseph Lyons. Joseph Aloysius Lyons, a prominent figure in Australian politics, served as the Prime Minister of Australia from 1932 to 1939. His radio broadcast occurred during the 1931 election campaign when he was the leader of the United Australia Party. This move was significant as it showcased the increasing importance of radio as a communication medium in politics. Lyons' innovative use of radio allowed him to reach a broader audience and connect with voters directly, marking a shift in political communication strategies during that era.