He entered the family pastoral business and ran stations in Goondiwindi, Queensland, and Marulan, New South Wales.

[4] Munro first stood for parliament at the 1963 election, losing to the incumbent Australian Labor Party (ALP) member Allan Fraser by 800 votes.

He reprised his candidacy at the 1966 election and defeated Fraser – in office since 1943 – by 624 votes with the aid of Country and Democratic Labor Party preferences.

[5] Munro successfully lobbied for the headquarters of the Snowy Mountain Hydro-electricity Authority to remain in Cooma.

[6] Munro died in a lift accident in a building in Bridge Street, Sydney, eight days after his 43rd birthday.