Austria held elections on 29 September 2024 for the National Council, the lower house of parliament. 183 seats are proportionally elected on a five-year term, as well as the Austrian chancellor who is nominated by the President after the elections (Parliament Austria n.d.).

The president of Sri Lanka is directly elected through a supplementary voting system: voters rank at least one, and up to three candidates in order of preference. If a candidate wins an absolute majority, they are declared the winner. If not, a second round is held to determine the winner between the top two, by transferring second or third preferences from candidates eliminated in the first round.