sentences:  He was elected to Dáil Éireann on his first attempt as a Clann na Poblachta Teachta Dála (TD) for the Roscommon constituency at the 1948 general election.After fellow Clann na Poblachta TD, Noël Browne resigned as Minister for Health, McQuillan resigned from Clann na Poblachta in support of Browne and sat as an independent TD.He was re-elected at the 1951, 1954 and 1957 general elections as an independent TD.