1908 United States presidential election in Idaho

The 1908 United States presidential election in Idaho took place on November 3, 1908. All contemporary 46 states were part of the 1908 United States presidential election. State voters chose three electors to the Electoral College, who selected the president and vice president.

Idaho was won by the Republican nominees, former Secretary of War William Howard Taft of Ohio and his running mate James S. Sherman of New York. They defeated the Democratic nominees, former U.S. Representative William Jennings Bryan and his running mate John W. Kern of Indiana. Taft won the state by a margin of 16.92%.

Bryan had previously won Idaho against Republican William McKinley in both 1896 and 1900.