Prior to 1977, it was common for the federal Parliament to have up to three sessions, with Parliament being prorogued at the end of each session and recalled at the beginning of the next. This was not always the case, for instance the 10th Parliament (1926–1928) went full term without prorogation. The practice of having multiple sessions in the same parliament gradually fell into disuse, and all parliaments from 1978 to 2013 had a single session. (There were only four prorogations since 1961, twice to allow the visiting Queen to "open" Parliament, once after the 1967 death of Prime Minister Harold Holt and for political reasons in 2016.) Since 1990, it has been the practice for the parliament to be prorogued on the same day that the House is dissolved so that the Senate will not be able to sit during the election period.