99chambers

Idaho State Senate seat · lines in effect since 2022

Idaho Legislative District 15

A district of about 54,000 people, 38% of adults with a bachelor's degree. It votes R+5.3 relative to the nation for president.

Codi Galloway (R) · since Nov 5, 2024Flipped in 2026Next election Nov 7, 2028The 2026 race →

Where it sits among all 35 seats

Every Idaho State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

R+5.36th most
Democratic
Most DemocraticMost Republican18th seat · the majority lineDistrict 15

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

202220242026
Idaho State SenateD+1.8R+3.7D+9.0

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Idaho Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 35 seats. Small marks are other seats in Idaho. The black marker is District 15.

Adults with a bachelor's degree38% 76th pct · 9th of 35 in ID

Higher than 76% of seats.

White adults without a degree51% 32nd pct · 24th of 35 in ID

Lower than 68% of seats.

Hispanic residents10% 41st pct · 21st of 35 in ID

Lower than 59% of seats.

Black residents1% 56th pct · 16th of 35 in ID

Higher than 56% of seats.

Asian residents4% 97th pct · 2nd of 35 in ID

Higher than 97% of seats.

People per square mile3,970 100th pct · 1st of 35 in ID

Densest of 35 seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean.

District 22
42% college gradsR+28.0Held RDistrict 20
46% college gradsR+32.0Held RDistrict 29
31% college gradsR+11.8Held DDistrict 21
37% college gradsR+30.2Held R

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Nancy Gregory (D)
    2027– · Won 2026 by 9.0
  2. Codi Galloway (R)
    2025–2027 · Won 2024 by 3.7
  3. Rick Just (D)
    2023–2025 · Won 2022 by 1.8

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)