Shirley Williams has been the most prominent member, in fact the second frontbencher since 1974. Labor frontbencher Allan Fraser unsuccessfully challenged ALP leader H. V. Evatt. Voorhoeve won against fellow frontbencher Loek Hermans and took office on 9 July 1986. Plasterk lost the leadership election to fellow frontbencher Diederik Samsom on 16 March 2012. The new frontbencher subsequently adopted a more moderate style of parliamentary conduct. Before becoming an MP, Ribeiro-Addy was chief of staff to former Labour frontbencher Diane Abbott. Onwurah backed Owen Smith in the 2016 Labour leadership election, but remained a Labour frontbencher. Crean was an Opposition frontbencher until Labor's defeat at the 1998 election. According to a "Sunday Herald Sun" investigation, McIntosh achieved little voter recognition as a frontbencher.