| Idaho Democratic Party | |
| Chairperson: | Lauren Necochea |
| Leader1 Title: | Senate Minority Leader |
| Leader1 Name: | Melissa Wintrow |
| Leader2 Title: | House Minority Leader |
| Leader2 Name: | Ilana Rubel |
| Founded: | 1860s |
| Headquarters: | Boise, Idaho |
| Membership Year: | 2024 |
| Membership: | 125,989[1] |
| Ideology: | Modern liberalism |
| National: | Democratic Party |
| Colors: | Blue |
| Seats1 Title: | Seats in the U.S. Senate |
| Seats2 Title: | Seats in the United States House of Representatives |
| Seats3 Title: | Seats in the Idaho Senate |
| Seats4 Title: | Seats in the Idaho House of Representatives |
| State: | Idaho |
The Idaho Democratic Party is the affiliate of the Democratic Party in the U.S. state of Idaho.
While the party has been in the minority for most of the state's history, it has produced several notable public figures, including former U.S. senator Frank Church and former governor and secretary of the interior Cecil Andrus. Trade union support has traditionally been a key component of Democratic success in Idaho.[2]
Created in 1863 after the discovery of new mining territory, the early Idaho Territory was heavily populated by settlers from western Oregon, California and Nevada who supported a radical Republican agenda. However, towards the end of the war, Idaho became flooded with Confederate refugees from states like Missouri who voted, like the miners in Idaho, heavily Democratic. The state became a Democratic stronghold for the next two decades.[3]
At the dawn of statehood, despite ceding Idaho almost entirely four years earlier to the Populists and Republicans (Cleveland won only 2 popular votes in 1892), a fusion Populist/Democratic ticket behind William Jennings Bryan's candidacy won the state with 78.1% of the vote with the support from Silver Republicans. Nevertheless, the three– man congressional delegation remained two-part Populist, one-part Republican.
It was not until the turn of the century that Idaho saw its first Democratic representation in Congress, Senator Fred Dubois, U.S. Marshal of the Idaho Territory and a former Republican. He successfully campaigned on the disenfranchisement of Mormons on the grounds that they broke the law by practicing polygamy, already having barred them form holding office while he held office in the state legislature. Ironically, while his anti– Mormonism as a Republican kept Democrats out of office after 1882, his anti-Mormonism as a Democrat had the same result after 1902.
Though Democrats and Jewish governor Moses Alexander were able to implement a radically progressive agenda with the backing of the Nonpartisan League while in control during Woodrow Wilson's presidency, they quickly ceded power and it was not until Franklin Delano Roosevelt's 1932 landslide that they began to turn out state and local (as well as national) Republican office holders for a sustained period of time. That year, all three congressional Republicans up for re– election were defeated by Democratic challengers by at least 11 percent. All three challengers, like their state party, were stalwart supporters of FDR's New Deal. Despite a turn of opinion against the federal government's programs years later, Democrats retained two of their three newly attained seats for at least 15 years and managed to control the legislature for eight until the chambers evened themselves out during and immediately after the war.
In the post-war decades, as state politics was professionalized, Republicans dominated the state legislature and the governor's mansion, but Democrats maintained a steadfast presence across all other executive offices. A platform of environmental concerns gave Idaho its last Democratic governor to date even as it became more conservative in its congressional delegation and state legislature. However, in the 1970s and 1980s, Democrats lost two key voting groups. After the national party adopted a host of liberal social issues like abortion rights and feminism, Idaho's Mormons left the party in droves. Meanwhile, unions lost influence in already declining mining and timber industries.[4]
Since 1994, when four-term Democratic governor Cecil Andrus retired and Representative Larry LaRocco was defeated, only one member of the party, Walt Minnick, has won either statewide office or election to Congress; after winning election to the latter capacity in 2008, Minnick was subsequently defeated for re-election by Republican Raúl Labrador two years later. Idaho Democrats currently seat only twelve members of the state House and six members of the state Senate, slightly worse than the ~20% they held in each chamber in 1996 when the party first collapsed. Unlike with other Mountain West states, such as Nevada and Colorado, immigration has not shifted Idaho leftward. Rather, Californians and other West Coast residents who have moved there have done so largely for cultural instead of economic reasons.[5]
The following Democrats hold prominent mayoralties in Idaho:
| 1890 | Benjamin Wilson | 7,948 | 43.65% | Lost | |
| 1892 | John M. Burke | 6,769 | 33.72% | Lost | |
| 1894 | Edward A. Stevenson | 7,057 | 28.70% | Lost | |
| 1896 | Frank Steunenberg | 22,096 | 76.79% | Won | |
| 1898 | Frank Steunenberg | 19,407 | 48.83% | Won | |
| 1900 | Frank W. Hunt | 28,628 | 50.87% | Won | |
| 1902 | Frank W. Hunt | 26,021 | 43.18% | Lost | |
| 1904 | Henry Heitfeld | 24,252 | 34.02% | Lost | |
| 1906 | Charles Stockslager | 29,496 | 40.09% | Lost | |
| 1908 | Moses Alexander | 40,145 | 41.61% | Lost | |
| 1910 | James H. Hawley | 40,856 | 47.42% | Won | |
| 1912 | James H. Hawley | 33,992 | 32.22% | Lost | |
| 1914 | Moses Alexander | 47,618 | 44.13% | Won | |
| 1916 | Moses Alexander | 63,877 | 47.49% | Won | |
| 1918 | H. F. Samuels | 38,499 | 40.05% | Lost | |
| 1920 | Ted A. Walters | 38,509 | 26.93% | Lost | |
| 1922 | Moses Alexander | 36,810 | 28.79% | Lost | |
| 1924 | A. L. Freehafer | 25,081 | 16.82% | Lost | |
| 1926 | Asher B. Wilson | 24,837 | 20.59% | Lost | |
| 1928 | C. Ben Ross | 63,046 | 41.58% | Lost | |
| 1930 | C. Ben Ross | 73,896 | 56.03% | Won | |
| 1932 | C. Ben Ross | 116,663 | 61.73% | Won | |
| 1934 | C. Ben Ross | 93,313 | 54.58% | Won | |
| 1936 | Barzilla W. Clark | 115,098 | 57.19% | Won | |
| 1938 | C. Ben Ross | 77,697 | 41.89% | Lost | |
| 1940 | Chase A. Clark | 120,420 | 50.48% | Won | |
| 1942 | Chase A. Clark | 71,826 | 49.85% | Lost | |
| 1944 | Charles C. Gossett | 109,527 | 52.64% | Won | |
| 1946 | Arnold Williams | 79,131 | 43.63% | Lost | |
| 1950 | Calvin E. Wright | 97,150 | 47.44% | Lost | |
| 1954 | Clark Hamilton | 104,647 | 45.76% | Lost | |
| 1958 | Alfred M. Derr | 117,236 | 49.04% | Lost | |
| 1962 | Vernon K. Smith | 115,876 | 45.36% | Lost | |
| 1966 | Cecil Andrus | 93,744 | 37.11% | Lost | |
| 1970 | Cecil Andrus | 128,004 | 52.22% | Won | |
| 1974 | Cecil Andrus | 184,142 | 70.92% | Won | |
| 1978 | John Evans | 169,540 | 58.75% | Won | |
| 1982 | John Evans | 165,365 | 50.64% | Won | |
| 1986 | Cecil Andrus | 193,429 | 49.9% | Won | |
| 1990 | Cecil Andrus | 218,673 | 68.21% | Won | |
| 1994 | Larry Echo Hawk | 181,363 | 43.88% | Lost | |
| 1998 | Robert C. Huntley | 110,815 | 29.07% | Lost | |
| 2002 | Jerry Brady | 171,711 | 41.73% | Lost | |
| 2006 | Jerry Brady | 198,845 | 44.11% | Lost | |
| 2010 | Keith G. Allred | 148,680 | 32.85% | Lost | |
| 2014 | A.J. Balukoff | 169,556 | 38.55% | Lost | |
| 2018 | Paulette Jordan | 231,081 | 38.19% | Lost | |
| 2022 | Stephen Heidt | 120,160 | 20.03% | Lost |