Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. |
C |
Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 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 |
# |
Vacant |
Jul 3, 1890 – Dec 18, 1890 |
After joining the Union, Idaho did not elect its senators for six months. |
1 |
51st |
1 |
After joining the Union, Idaho did not elect its senators for six months. |
Jul 3, 1890 – Dec 18, 1890 |
Vacant |
1 |
 George Shoup |
Republican |
Dec 18, 1890 – Mar 3, 1901 |
Elected in 1890. |
Elected in 1890.Retired. |
Dec 18, 1890 – Mar 3, 1891 |
Republican |
 William McConnell |
1 |
52nd |
2 |
Elected in 1890.Lost re-election as a Silver Republican. |
Mar 4, 1891 – Mar 3, 1897 |
Republican |
 Fred Dubois |
2 |
53rd |
Re-elected in 1895.Lost re-election. |
2 |
54th |
55th |
3 |
Elected in 1897.Retired. |
Mar 4, 1897 – Mar 3, 1903 |
Populist |
 Henry Heitfeld |
3 |
56th |
2 |
 Fred Dubois |
Silver Republican |
Mar 4, 1901 – Mar 3, 1907 |
Elected in 1901 as a Silver Republican, but changed party to Democratic.Lost re-election. |
3 |
57th |
Democratic |
58th |
4 |
Elected in 1903. |
Mar 4, 1903 – Oct 17, 1912 |
Republican |
 Weldon Heyburn |
4 |
59th |
3 |
 William Borah |
Republican |
Mar 4, 1907 – Jan 19, 1940 |
Elected in 1907. |
4 |
60th |
61st |
5 |
Re-elected in 1909.Died. |
62nd |
|
Oct 17, 1912 – Nov 18, 1912 |
Vacant |
Appointed to continue Heyburn's term.Lost election to finish Heyburn's term. |
Nov 18, 1912 – Feb 6, 1913 |
Democratic |
 Kirtland Perky |
5 |
Elected in 1913 to finish Heyburn's term. |
Feb 6, 1913 – Jan 13, 1918 |
Republican |
 James Brady |
6 |
Re-elected in 1913. |
5 |
63rd |
64th |
6 |
Re-elected in 1914.Died. |
65th |
|
Jan 13, 1918 – Jan 22, 1918 |
Vacant |
Appointed to continue Brady's term.Elected in 1918 to finish Brady's term.Resigned to become a Federal Trade Commissioner, having lost election to a full term. |
Jan 22, 1918 – Jan 14, 1921 |
Democratic |
 John F. Nugent |
7 |
Re-elected in 1918 |
6 |
66th |
Appointed to finish Brady's term, having been elected to the next term. |
Jan 15, 1921 – Jun 24, 1928 |
Republican |
 Frank Gooding |
8 |
67th |
7 |
Elected to full term in 1920. |
68th |
Re-elected in 1924. |
7 |
69th |
70th |
8 |
Re-elected in 1926.Died. |
|
Jun 24, 1928 – Jun 30, 1928 |
Vacant |
Appointed to continue Gooding's term.Elected in 1928 to finish Gooding's term.Lost re-election. |
Jun 30, 1928 – Mar 3, 1933 |
Republican |
 John Thomas |
9 |
71st |
Re-elected in 1930. |
8 |
72nd |
73rd |
9 |
Elected in 1932.Lost renomination. |
Mar 4, 1933 – Jan 3, 1939 |
Democratic |
 James P. Pope |
10 |
74th |
Re-elected in 1936.Died. |
9 |
75th |
76th |
10 |
Elected in 1938.Lost renomination. |
Jan 3, 1939 – Jan 3, 1945 |
Democratic |
 D. Worth Clark |
11 |
Vacant |
Jan 19, 1940 – Jan 27, 1940 |
|
4 |
 John Thomas |
Republican |
Jan 27, 1940 – Nov 10, 1945 |
Appointed to continue Borah's term.Elected in 1940 to finish Borah's term. |
77th |
Re-elected in 1942.Died. |
10 |
78th |
79th |
11 |
Elected in 1944.Lost renomination. |
Jan 3, 1945 – Jan 3, 1951 |
Democratic |
 Glen H. Taylor |
12 |
Vacant |
Nov 10, 1945 – Nov 17, 1945 |
|
5 |
 Charles C. Gossett |
Democratic |
Nov 17, 1945 – Nov 5, 1946 |
Appointed to continue Thomas's term.Lost nomination to finish Thomas's term. |
6 |
 Henry Dworshak |
Republican |
Nov 6, 1946 – Jan 3, 1949 |
Elected in 1946 to finish Thomas's term.Lost re-election. |
80th |
7 |
 Bert H. Miller |
Democratic |
Jan 3, 1949 – Oct 8, 1949 |
Elected in 1948.Died. |
11 |
81st |
Vacant |
Oct 8, 1949 – Oct 14, 1949 |
|
8 |
 Henry Dworshak |
Republican |
Oct 14, 1949 – Jul 23, 1962 |
Appointed to continue Miller's term.Elected in 1950 to finish Miller's term. |
82nd |
12 |
Elected in 1950.Lost re-election. |
Jan 3, 1951 – Jan 3, 1957 |
Republican |
 Herman Welker |
13 |
83rd |
Re-elected in 1954 |
12 |
84th |
85th |
13 |
Elected in 1956. |
Jan 3, 1957 – Jan 3, 1981 |
Democratic |
 Frank Church |
14 |
86th |
Re-elected in 1960.Died. |
13 |
87th |
Vacant |
Jul 23, 1962 – Aug 6, 1962 |
|
9 |
 Len Jordan |
Republican |
Aug 6, 1962 – Jan 3, 1973 |
Appointed to continue Dworshak's term.Elected in 1962 to finish Dworshak's term. |
88th |
14 |
Re-elected in 1962. |
89th |
Re-elected in 1966.Retired. |
14 |
90th |
91st |
15 |
Re-elected in 1968. |
92nd |
10 |
 Jim McClure |
Republican |
Jan 3, 1973 – Jan 3, 1991 |
Elected in 1972. |
15 |
93rd |
94th |
16 |
Re-elected in 1974.Lost re-election. |
95th |
Re-elected in 1978. |
16 |
96th |
97th |
17 |
Elected in 1980. |
Jan 3, 1981 – Jan 3, 1993 |
Republican |
 Steve Symms |
15 |
98th |
Re-elected in 1984.Retired. |
17 |
99th |
100th |
18 |
Re-elected in 1986.Retired. |
101st |
11 |
 Larry Craig |
Republican |
Jan 3, 1991 – Jan 3, 2009 |
Elected in 1990. |
18 |
102nd |
103rd |
19 |
Elected in 1992.Retired to run for Governor of Idaho. |
Jan 3, 1993 – Jan 3, 1999 |
Republican |
 Dirk Kempthorne |
16 |
104th |
Re-elected in 1996. |
19 |
105th |
106th |
20 |
Elected in 1998. |
Jan 3, 1999 – present |
Republican |
 Mike Crapo |
17 |
107th |
Re-elected in 2002.Retired. |
20 |
108th |
109th |
21 |
Re-elected in 2004. |
110th |
12 |
 Jim Risch |
Republican |
Jan 3, 2009 – present |
Elected in 2008. |
21 |
111th |
112th |
22 |
Re-elected in 2010. |
113th |
Re-elected in 2014. |
22 |
114th |
115th |
23 |
Re-elected in 2016. |
116th |
Re-elected in 2020. |
23 |
117th |
118th |
24 |
Re-elected in 2022. |
119th |
To be determined in the 2026 election. |
24 |
120th |
121st |
25 |
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 2 |
Class 3 |