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A Quick Guide to Idaho's May 21 Primary Election

Posted on May 14, 2024   |   Updated on September 30, 2025
Blake Hunter

Blake Hunter

It’s crunch time for Idaho candidates. (Vladimir Vladimirov / Getty)

It’s crunch time for Idaho candidates. (Vladimir Vladimirov / Getty)

Idaho’s primary election is a week from today, so study up on your candidates and figure out when and where you’ll cast your ballot. If you want to cast your ballot before Tuesday, May 21, early voting is currently open and ends on Friday, May 17.

To Vote Early

In Ada County, there are four early voting sites open from 8 a.m. - 5 p.m., and anyone registered to vote in Ada County can vote at any of the locations:

  • Ada County Elections Office
  • Boise City Hall
  • Eagle Public Library
  • Meridian City Hall

You can also chase down the mobile voting unit at the Kuna Library today and tomorrow, and at the Lake Hazel Library Thursday and Friday.

Preview your ballot today! (Ada County Elections Office / ArcGIS)

Preview your ballot today! (Ada County Elections Office / ArcGIS)

To Find Out What’s on the Ballot

The short version of what’s on the ballot is pretty simple:

  • Your state legislators (all 105 Idaho legislative seats are up for the taking).
  • Our U.S. House Representatives.
  • County commissioners.
  • County sheriffs.
  • County prosecuting attorneys.

You can preview your ballot by entering the address you’re currently registered to vote at with this map tool from the Ada County Elections Office.

Reminder: The GOP has a closed primary, so only registered Republicans can vote for Republican candidates.

So much hangs in the balance of the Idaho Legislature, but don’t overlook the county commission races. For example, four Republicans are vying for the District 3 seat, and the victor could decide what role the Expo Idaho property plays in county government, how much the county invests in housing, and much more.

City Cast

Why You Should Really, Really Care About the Ada County Commissioners' Election

00:00:00

To Dig Deeper

Idaho’s local media earns our support year-round, but perhaps never more so than during election season. Here are some of the best resources and perspectives to consider going into this election:

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