| Date: | November 5, 2024 |
| Country: | Idaho |
| Yes: | 269,959 |
| No: | 618,751 |
| Total: | 888,710 |
| Measure to (1) Replace Voter Selection of Party Nominees with a Top-four Primary; (2) Require a Ranked-choice Voting System for General Elections | |
| Map: | File:2024 Idaho open primary initiative results map by county.svg |
| Map Size: | 300px |
The Idaho Open Primary measure is a ballot initiative in the state of Idaho that will be voted on November 5, 2024, as part of the 2024 United States elections. On July 10, it was certified for the ballot. If enacted, the initiative would end Idaho's system of closed primaries, replacing it with a top-four primary, and implement a ranked-choice voting system for the general election to replace the current plurality voting system.[1] This would apply to congressional, gubernatorial, and state and county elected offices.[2] Top-four primaries with ranked-choice general elections are currently in use in Alaska.
As of 11 September 2024, there have been 116 endorsements for the Idaho Open Primaries Initiative by high-profile Idaho Republicans.[3]