 Following the resignation of Australian Greens leader Bob Brown in 2012, she was again nominated for the deputy leadership but lost by an undisclosed margin to Adam Bandt.Hanson-Young was re-elected to the Senate at the 2013 federal election and again at the 2016 double dissolution election.In December 2013, Hanson-Young, along with Senators Louise Pratt (ALP) and Sue Boyce (LNP) established a cross-party working group on marriage equality.