McGinty v Western Australia is a significant indicator of present and prospective attitudes of the High Court to major issues of representative democracy, such as electoral representation and equality. In affirming by a majority that substantial numerical voter inequality in Western Australian state electorates did not infringe a concept of representative democracy in either the Commonwealth or the Western Australian constitutions, the court went beyond a refusal to overturn AG (Cth); Ex Rel McKinlay v Commonwealth of more than twenty years earlier.
In McKinlay, a voter had sought a declaration that s 19 of the Commonwealth Electoral Act 1918 (Cth), which permitted a variation of 10 per cent of the number of electors above or below the quota for a state's seats in the House of Representatives, was invalid on the grounds that it offended the first paragraph of s 24 of the Commonwealth Constitution. The High Courts held that s 24 did not require that the number of people or the number of electors in electoral divisions be equal. In other words, it was found that the Commonwealth Constitution did not mandate a principle of one vote, one value.