Wall was born in Castledermot, County Kildare in 1945. He was educated at Castledermot national school and Castledermot vocational school. He worked as an electrician before entering into local politics in 1991 when he was elected to Athy Town Council and Kildare County Council.[2]
In 1993, Wall was nominated to Seanad Éireann. He was elected to Dáil Éireann as a Labour Party TD for Kildare South at the 1997 general election, and was re-elected at each subsequent general election until his retirement in 2016.[2] He previously served as Labour Party Spokesperson for Agriculture, Defence and Arts, Sport and Tourism, and also for Community and Rural Affairs.[citation needed]