The 1941 New Zealand census had been postponed due to World War II, so the 1946 electoral redistribution had to take ten years of population growth and movements into account.
[4] After the war, Jack Marshall briefly established himself as a barrister, but was soon persuaded to stand as the National Party's candidate for the new Wellington electorate of Mount Victoria in the 1946 election.
He was, however, nearly disqualified by a technicality – Marshall was employed at the time in a legal case for the government, something which ran afoul of rules barring politicians from giving business to their own firms.
However, because Marshall had taken on the case before his election (and so could not have influenced the government's decision to give him employment), it was obvious that there had been no wrongdoing.
He was defeated by Norman Kirk in the 1972 election, and was replaced as leader of the National Party by Robert Muldoon in 1974.