The 2006 United States Senate election in Hawaii was held November 7, 2006. Incumbent Democrat Daniel Akaka won re-election to his third full term.

Democratic primary

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Candidates

Campaign

Case had stated that although he has the deepest respect for Daniel Akaka, Hawaii is in a time of transition with regard to the state's representation in Congress which requires that the state phase in the next generation to provide continuity in that service. He had warned the state would lose all clout in Washington if the state's two US Senators, both of whom are over 80 years old, leave office within a short time of each other. If a Senator were to die, Hawaii election law requires that the governor appoint a replacement of the same party. Hawaii's other members of Congress, Rep. Neil Abercrombie and Sen. Daniel Inouye, pledged their support to Akaka.

Debates

Polling

Endorsements

Results

Republican primary

Candidates

Results

Hawaii State Representative Cynthia Thielen was selected to be the Republican nominee after Jerry Coffee, who had previously withdrawn his candidacy, won the primary.

General election

Candidates

Predictions

Polling

Results

Akaka won in all 4 Hawaii counties, taking at least 60% of the vote in each area.