Current delegation

Brian Schatz (D)

Mazie Hirono (D)

Hawaii was admitted to the Union on August 21, 1959, and elects U.S. senators to classes 1 and 3. Seven people including only one Republican have served as a U.S. senator from Hawaii. The state's current U.S. senators are Democrats Brian Schatz and Mazie Hirono. Hawaii's class 1 seat is the only one in the United States that has always been held by an ethnic minority.^{[citation needed]} Its class 3 seat is the only one in the United States that has always been held by a member of the Democratic Party.^{[citation needed]}

Hawaii last elected a Republican in 1970, which has resulted in the longest streak in the nation for a state's having all-Democratic senators. Daniel K. Inouye was Hawaii's longest-serving senator, from 1963 to 2012.

List of senators

Class 1 Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2000, 2006, 2012, and 2018. The next election will be in 2024.						C	Class 3 Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2010, 2014 (special election), 2016, and 2022. The next election will be in 2028.
#	Senator	Party	Dates in office	Electoral history	T		T	Electoral history	Dates in office	Party	Senator	#
1	Hiram Fong	Republican	Aug 21, 1959 – Jan 3, 1977	Elected in 1959.	1	86th	1	Elected in 1959. Retired.	Aug 21, 1959 – Jan 3, 1963	Democratic	Oren E. Long	1
						87th
						88th	2	Elected in 1962.	Jan 3, 1963 – Dec 17, 2012	Democratic	Daniel Inouye	2
				Re-elected in 1964.	2	89th
						90th
						91st	3	Re-elected in 1968.
				Re-elected in 1970. Retired.	3	92nd
						93rd
						94th	4	Re-elected in 1974.
2	Spark Matsunaga	Democratic	Jan 3, 1977 – Apr 15, 1990	Elected in 1976.	4	95th
						96th
						97th	5	Re-elected in 1980.
				Re-elected in 1982.	5	98th
						99th
						100th	6	Re-elected in 1986.
				Re-elected in 1988. Died.	6	101st
Vacant			Apr 15, 1990 – May 16, 1990
3	Daniel Akaka	Democratic	May 16, 1990 – Jan 3, 2013	Appointed to continue Matsunaga's term. Elected in 1990 to finish Matsunaga's term.
						102nd
						103rd	7	Re-elected in 1992.
				Re-elected in 1994.	7	104th
						105th
						106th	8	Re-elected in 1998.
				Re-elected in 2000.	8	107th
						108th
						109th	9	Re-elected in 2004.
				Re-elected in 2006. Retired.	9	110th
						111th
						112th	10	Re-elected in 2010. Died.
									Dec 17, 2012 – Dec 26, 2012	Vacant
								Appointed to continue Inouye's term. Elected in 2014 to finish Inouye's term.	Dec 26, 2012 – present	Democratic	Brian Schatz	3
4	Mazie Hirono	Democratic	Jan 3, 2013 – present	Elected in 2012.	10	113th
						114th
						115th	11	Re-elected in 2016.
				Re-elected in 2018.	11	116th
						117th
						118th	12	Re-elected in 2022.
To be determined in the 2024 election.					12	119th
						120th
						121st	13	To be determined in the 2028 election.
#	Senator	Party	Years in office	Electoral history	T	C	T	Electoral history	Years in office	Party	Senator	#
Class 1							Class 3