2012 Yamashita was unopposed for the August 11, 2012 Democratic Primary, winning with 3,686 votes,[3] and won the November 6, 2012 General election with 7,457 votes (73.3%) against Republican nominee Ekolu Kalama.[4]
2002 With Democratic Representative Hermina Morita redistricted to District 14, Yamashita was unopposed for the District 12 September 21, 2002 Democratic Primary, winning with 2,391 votes,[5] but lost the November 5, 2002 General election to Incumbent Republican Kika Bukoski.[6]
2004 Yamashita won the September 18, 2004 Democratic Primary with 2,059 votes (59.3%),[7] and incumbent Representative Bukoski was unopposed for the Republican Primary, setting up a rematch; Yamashita won the November 2, 2004 General election with 5,157 votes (51.1%) against Bukoski.[8]
2006 Yamashita was unopposed for the September 26, 2006 Democratic Primary, winning with 4,023 votes,[9] and won the November 7, 2006 General election with 6,681 votes (79.4%) against Republican nominee Wesley Goodin.[10]
2008 Yamashita won the September 20, 2008 Democratic Primary with 2,605 votes (58.9%),[11] and won the November 4, 2008 General election with 7,151 votes (66.1%) against Republican nominee Mickey Vierra.[12]
2010 Yamashita was unopposed for the September 18, 2010 Democratic Primary, winning with 3,950 votes,[13] and won the November 2, 2010 General election with 6,242 votes (69.9%) against Republican nominee Laurie Rinaldi.[14]