Parliament of Australia
From 1901 to 1949, the House consisted of either 74 or 75 members (the Senate had 36). Between 1949 and 1984, it had between 121 and 127 members (the Senate had 60 until 1975, when it increased to 64). In 1977, the High Court ordered that the size of the House be reduced from 127 to 124 members to comply with the nexus provision. In 1984, both the Senate and the House were enlarged; since then the House has had between 148 and 150 members (the Senate has 76).
1953 Australian Senate election
Half-senate elections were held in Australia on 9 May 1953. 32 of the seats in the Senate were up for election. This was the first time a Senate election had been held without an accompanying election of the House of Representatives. The two election cycles fell out of synchronisation after the 1951 double dissolution. While the term of the House was not due to expire until 1954, a Senate election was due by 1 July 1953.