Federal Elections Since 1910 - winner's proportion of HoR seats
* Two party preferred vote: actual AEC data from 1983 to 2004; AEC estimates from 1949 to 1980; Adam Carr's estimates from 1919 to 1946. Note the 1919 2pp is smaller than the primary vote. Country Party preferences flowing to Labor? Perhaps not appropriate to add Nationalist and CP primaries together.