Harbison became a
Councillor in 1998 and in 2002 ran as
Liberal candidate for the state seat of Adelaide only to be defeated by former Lord Mayor
Jane Lomax-Smith. Harbison was elected Lord Mayor in 2003, defeating former Lord Mayor Alfred Huang and local bookseller
Greg Mackie. One of his most publicised election pledges was to close
Rundle Street to traffic on Friday nights, saying the Council should have the courage to "say no to cars". His eight years in office focused on heritage preservation, urban revitalisation, prudent financial policies and investing in asset and infrastructure repairs across the city. Harbison oversaw a budget that included installing solar panels on the
Adelaide Central Market and installing butt-out bins in city streets. Harbison also backed the State Government's tramline extensions plans, crediting it for "successfully provided an environmentally sustainable transport option for commuters and has also sparked major development interest". During his first term, he oversaw the rolling out of 50 WIFI hot spots on lamp posts, traffic lights, and under trees. The initiative made Adelaide the first city centre in Australia to be permanently online. He also encouraged Council to install dark fibre wherever new cabling was done to help build a sufficient wireless network. One of the initiatives Harbison championed in his second term was a free car use scheme, whereby people could loan a vehicle near their home free-of-charge for up to an hour. The City Council allocated three carparking spaces for the first of the share vehicles. "It takes pressure off the city streets with less cars, but also it relieves the burden of car ownership for individual residents," he told
ABC Radio Adelaide. The City of Adelaide Act limits the Lord Mayor of Adelaide to serving two consecutive terms. Harbison was succeeded at the
2010 South Australian local elections by
Stephen Yarwood. == Controversies ==