2020 Idaho Senate election

The 2020 Idaho Senate election took place as part of the biennial 2020 United States elections. Idaho voters elected state senators in all of the state's 35 senate districts. State senators serve two-year terms in the Idaho Senate.

No seats changed hands in the election, with the closest, the Moscow-based District 5, being within one percentage point of flipping.

Retirements
Six incumbents did not run for re-election in 2020. Those incumbents are:

Republicans

 * 1) District 3: Don Cheatham: Retiring
 * 2) District 23: Bert Brackett: Retiring
 * 3) District 30: Dean Mortimer: Retiring
 * 4) District 34: Brent Hill: Retiring

Democrats

 * 1) District 17: Maryanne Jordan: Retiring
 * 2) District 19: Cherie Buckner-Webb: Retiring