99chambers

Idaho House of Representatives seat · lines in effect since 2022

Idaho Legislative District 21

A district of about 50,000 people, 37% of adults with a bachelor's degree. It votes R+30.2 relative to the nation for president.

James Petzke (R) · since Nov 8, 2022Jeff Ehlers (R) · since Nov 8, 2022Next election Nov 7, 2028The 2026 race →

Where it sits among all 35 seats

Every Idaho House of Representatives 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+30.212th most
Democratic
Most DemocraticMost Republican18th seat · the majority lineDistrict 21

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 House of RepresentativesR+35.2R+30.6R+19.0

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 21.

Adults with a bachelor's degree37% 74th pct · 10th of 35 in ID

Higher than 74% of seats.

White adults without a degree52% 35th pct · 23rd of 35 in ID

Lower than 65% of seats.

Hispanic residents12% 56th pct · 16th of 35 in ID

Higher than 56% of seats.

Black residents1% 82nd pct · 7th of 35 in ID

Higher than 82% of seats.

Asian residents2% 76th pct · 9th of 35 in ID

Higher than 76% of seats.

People per square mile2,398 82nd pct · 7th of 35 in ID

Denser than 82% of 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 25
22% college gradsR+37.8Held 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. Jeff Ehlers (R)
    2023– · Won 2022 by 44.6, 2024 by 30.6, 2026 by 19.0
  2. James Petzke (R)
    2023– · Won 2022 by 35.2, 2024 by 34.7, 2026 by 20.0

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