2006 United States Senate election in Hawaii

Daniel Kahikina Akaka was an American educator and politician who served as a United States Senator from Hawaii from 1990 to 2013. A member of the Democratic Party, Akaka was the first U.S. Senator of Native Hawaiian ancestry.

Edward Espenett Case is an American lawyer and Democratic politician serving as the U.S. representative for Hawaii's 1st congressional district, which covers the urban core of Honolulu. He represented the 2nd district, which covers the rest of the state, from 2002 to 2007.

Neil Abercrombie is an American politician who served as the seventh governor of Hawaii from 2010 to 2014. He is a member of the Democratic Party.

Daniel Ken Inouye was an American lawyer and politician who served as a United States senator from Hawaii from 1963 until his death in 2012. Beginning in 1959, he was the first U.S. representative for the State of Hawaii, and a Medal of Honor recipient. A member of the Democratic Party, he also served as the president pro tempore of the United States Senate from 2010 until his death. Inouye was the highest-ranking Asian-American politician in U.S. history, until Kamala Harris became vice president in 2021. Inouye also chaired various senate committees, including those on Intelligence, Indian Affairs, Commerce, and Appropriations.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

The Hawaii House of Representatives is the lower house of the Hawaii State Legislature. Pursuant to Article III, Section 3 of the Constitution of Hawaii, amended during the 1978 constitutional convention, the House of Representatives consists of 51 members representing an equal number of districts across the islands. It is led by the Speaker of the House elected from the membership of the House, with majority and minority leaders elected from their party's respective caucuses. The current Speaker of the House is Scott Saiki.

Cynthia Henry Thielen is an American politician who served as a member of the Hawaii House of Representatives representing District 50, the Kailua and Kaneohe Bay areas of Oahu County. A Republican, she served in the state House of Representatives from 1990 until 2020. She served as minority floor leader from 1992 to 1997 and was the assistant minority leader at the time of her retirement.

Daniel Kahikina Akaka was an American educator and politician who served as a United States Senator from Hawaii from 1990 to 2013. A member of the Democratic Party, Akaka was the first U.S. Senator of Native Hawaiian ancestry.

Cynthia Henry Thielen is an American politician who served as a member of the Hawaii House of Representatives representing District 50, the Kailua and Kaneohe Bay areas of Oahu County. A Republican, she served in the state House of Representatives from 1990 until 2020. She served as minority floor leader from 1992 to 1997 and was the assistant minority leader at the time of her retirement.

Stuart Rothenberg is an American editor, publisher, and political analyst. He is best known for his biweekly political newsletter The Rothenberg Political Report, now known as Inside Elections. He was also a regular columnist at Roll Call and an occasional op-ed contributor to other publications, including The Wall Street Journal, The Washington Post, The New York Times, and The Orlando Sentinel.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

The Libertarian Party (LP) is a political party in the United States that promotes civil liberties, non-interventionism, laissez-faire capitalism, and limiting the size and scope of government. The party was conceived in August 1971 at meetings in the home of David F. Nolan in Westminster, Colorado, and was officially formed on December 11, 1971, in Colorado Springs, Colorado. The organizers of the party drew inspiration from the works and ideas of the prominent Austrian school economist, Murray Rothbard. The founding of the party was prompted in part due to concerns about the Nixon administration, the Vietnam War, conscription, and the introduction of fiat money.

In political science, voter turnout is the participation rate of a given election. This is typically either the percentage of registered voters, eligible voters, or all voting-age people. According to Stanford University political scientists Adam Bonica and Michael McFaul, there is a consensus among political scientists that "democracies perform better when more people vote."