Montana House of Representatives seat · lines in effect since 2024

Montana House District 45

A district of about 12,000 people, 49% of adults with a bachelor's degree. It votes D+4.3 relative to the nation for president.

Denise Baum (D) · since Nov 8, 2022Next election Nov 7, 2028The 2026 race →

Where it sits among all 100 seats

Every Montana 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.

D+4.333rd most
Democratic

Most DemocraticMost Republican51st seat · the majority lineDistrict 45

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.

	2016	2018	2020	2024	2026
U.S. Senate	No race	D+17.7	D+7.5	D+10.4	No race
Governor	D+15.4	No race	No race	R+0.2	No race
Montana House of Representatives	No race	No race	No race	D+5.9	D+17.8

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

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

Who lives here, compared

Grey bars show the spread of all 100 seats. Small marks are other seats in Montana. The black marker is District 45.

Adults with a bachelor's degree49% 84th pct · 16th of 97 in MT

15%81%

Higher than 84% of seats.

White adults without a degree42% 15th pct · 83rd of 97 in MT

7%75%

Lower than 85% of seats.

Hispanic residents5% 68th pct · 32nd of 97 in MT

1%13%

Higher than 68% of seats.

Black residents1% 81st pct · 19th of 97 in MT

0%5%

Higher than 81% of seats.

Asian residents0% 20th pct · 78th of 97 in MT

0%5%

Lower than 80% of seats.

People per square mile3,800 97th pct · 4th of 97 in MT

110K

Denser than 97% 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 80
46% college gradsD+2.0Held D District 65
54% college gradsD+14.2Held D District 79
50% college gradsD+6.4Held D District 83
55% college gradsD+9.9Held D

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 2024.

Denise Baum (D)
2025– · Won 2024 by 5.9, 2026 by 17.8

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