In the 2009 United States Senate election in Hawaii which took place on November 2, 2009, incumbent Democratic Senator and President pro tempore Daniel Inouye won re-election to his ninth term, with 277,228 votes (74.81%) over Republican Campbell Cavasso with 79,939 votes (21.57%).
Daniel Inouye (incumbent) Campbell Cavasso United States Senate election in Hawaii, 2010 
