2028 Republican primary in Idaho

Idaho usually votes after the four traditional early states, often on or after Super Tuesday in early March. Idaho has leaned Republican in recent presidential elections (it voted Republican in 2016, Republican in 2020, and Republican in 2024), so this primary effectively picks the favorite to carry the state in November 2028. The official 2028 Republican primary date and the calendar order are not finalized yet.

Idaho at a glance

Electoral votes4
RegionWest
CapitalBoise
General-election leanSafe Republican
2024 resultTrump (R)
2020 resultTrump (R)
2016 resultTrump (R)
Calendar positionMid-to-late (not set)

See the Idaho general-election outlook.

The Republican field

The candidates Idaho Republican voters would choose among:

JD Vance Marco Rubio Ron DeSantis Dan Greaney Brian Kemp Byron Donalds Donald Trump Jr.Elise Stefanik Glenn Youngkin

Full field and process on the 2028 Republican primary hub.

Why Idaho matters in the 2028 Republican race

Idaho is reliable Republican turf in general elections, so its Republican primary is closely watched as a read on where the party's voters stand, even though the state itself is not a top November battleground.

Recent presidential results in Idaho: it voted Republican in 2016, Republican in 2020, and Republican in 2024. Compare the 2028 nomination odds and the latest 2028 primary polls.

Keep exploring

Other West Republican primaries

Alaska Arizona California Colorado Hawaii Montana All Republican primaries

Quick answers

Idaho 2028 Republican primary FAQ

When is the 2028 Republican primary in Idaho?

The official 2028 date has not been set. Idaho typically votes after the early states, often around Super Tuesday or later. Check back as the calendar is confirmed.

How does Idaho usually vote in presidential elections?

Idaho voted Republican in 2016, Republican in 2020, and Republican in 2024. Analysts currently rate it Safe Republican for 2028. See the full Idaho general-election outlook for detail.

Who is running in the 2028 Republican primary?

As of June 2026 no candidate has formally declared. The most-discussed Republican contenders include JD Vance, Marco Rubio, Ron DeSantis, Dan Greaney.

How many delegates does Idaho have?

Exact 2028 delegate counts are set by the Republican National Committee (RNC) closer to the election. As a rough guide, states with more delegates than Idaho (4 electoral votes) carry more delegates than smaller ones.