# Andrea Olsen

Andrea Olsen is a Democratic member of the Montana Senate for district 48.

- Party: Democrat
- Seat: Montana Senate, district 48
- Serving since: 2023-01-02
- Current term: MT 2025–26 session
- Open States ID: ocd-person/2dcaf4be-0227-4ced-b01c-aacd8376c45a

Source: https://americaspoliticalpulse.com/p/2dcaf4be-0227-4ced-b01c-aacd8376c45a (America’s Political Pulse, Polarization Research Lab), data through 2026-10-27. Data under CC BY 4.0. Cite as: Westwood, Sean J., and Yphtach Lelkes. 2024. America's Political Pulse [data set].

## Headline

Olsen has served since 2023.

## Ideology (CSIP)

CSIP score −0.82 (standard error 0.03), from 198 donors and 892 roll calls. Negative is left of 0, positive right of it, on one scale for every official. 26% of State Senate Democrats score lower.

## Votes (MT 2025–26 session)

2,812 roll calls. Attendance 98.9% (Montana Senate 98.9%). Party unity 96.1% (85%). 403 votes against the party majority.

## Campaign money (2026 cycle)

Itemized receipts $15.7K (State Senate Democrats median $55.5K). 90% of itemized individual money came from in state. Aggregates only; no individual donors.

## Links

- Official site: https://leg.mt.gov/legislator-information/roster/individual/7573
- Campaign site: https://www.andreaolsenmt.com
- Facebook: https://www.facebook.com/andreaolsenforsenate
- Facebook: https://www.facebook.com/andrea.j.olsen

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/2dcaf4be-0227-4ced-b01c-aacd8376c45a