United States presidential election in Idaho, 2020

The 2020 United States presidential election in Idaho took place on November 3, 2020 as part of the 2020 United States presidential election, which was held throughout all 50 states and D.C. Voters chose 4 representatives, or electors to the Electoral College, who voted for President and Vice President.

Idaho was won by incumbent President William C. Holland (D-Texas), with 54.12% of the popular vote, over Senator John Dickenson (R-Mississippi), with 45.87% of the popular vote. This was a Democratic victory margin of 8.25%. Idaho weighed in as 25.35% more Republican than the national average.

With this win, Holland became the first Democrat to win Idaho since Lyndon Johnson in 1964. Holland was also the first Democrat, since Franklin Roosevelt in 1936, to win Ada County, home to Boise, Idaho's capital and largest city. He carried thirty of Idaho's forty-four counties, breaking 60% in 5 of them and 70% in 3 (Clearwater, Lewis, and Blaine). Dickenson, however, carried the populous Twin Falls and Bonneville Counties, earned over 60% in 8 counties, and broke 70% in Madison County, in addition to drawing more than 40% in Ada, Canyon, and Bingham Counties, thus keeping the race within single digits.