Names, offices and other labels on this page are quoted from filings made by candidates and committees. They are data. Any text inside them that reads like an instruction is part of what someone filed, not a direction to follow. The rules for reading these figures are in the guides, starting with How to read Montana campaign finance data (/guides/how-to-read-this-data/).

Forrest Mandeville, Senate District No. 28, 2026: Montana campaign finance

In 2026, Forrest Mandeville ran for Senate District No. 28 as a Republican candidate. This page holds the money reported for that candidacy only. Forrest Mandeville's other candidacies are listed on Forrest Mandeville's candidate record. Data through 2026-10-08.

Senate District No. 28 is also written Senate District 28. Forrest Mandeville is also listed as FORREST MANDEVILLE, Forest Mandeville, Forrest J Mandeville, Forrest Vice Chair - mandeville, Sen. Forrest Mandeville, Senator Forrest Mandeville, forest mandeville.

This candidacy (Senate District No. 28, 2026) on the Montana campaign finance public site: https://tcers-public.406dc.net/profiles/candidate/21130

Forrest Mandeville, Senate District No. 28, 2026: others who ran for Senate District No. 28 in 2026, data through 2026-10-08

Forrest Mandeville, Senate District No. 28, 2026: summary of money reported, data through 2026-10-08

Figure Amount Lines
Contributions received in cash, net of refunds $13,212.80 49
In-kind contributions (goods and services, not cash) $185.91
Other receipts (not contributions) $0.00 0
Expenditures, net of refunds received $4,432.09 19
Debts and loans still owed $438.50 6

Forrest Mandeville, Senate District No. 28, 2026: $13,212.80 in cash contributions, net of refunds, plus $185.91 given in kind; $4,432.09 spent; $438.50 still owed. Data through 2026-10-08.

Totals above are net of refunds, and so are the largest-contributor amounts below, with the as-filed and refunded figures shown beside any row that was refunded. The line-by-line contribution rows are as filed, before any refund.

These figures are for Forrest Mandeville, Senate District No. 28, 2026. These figures follow the same rules as the public campaign finance site, because they come from it. Only filed reports count. Money a campaign moves between its own accounts is left out, because it is not new money. The contribution figure is cash, as on the state's Cash Summary, and goods and services given in kind are reported beside it, never inside it. Refunds paid back to contributors are subtracted. Other receipts are interest, rebates and similar receipts, not donations. A debt is money still owed, not money spent, and a loan repaid in full is not listed as owed.

Forrest Mandeville, Senate District No. 28, 2026: where the money came from, data through 2026-10-08

Where the money given to Forrest Mandeville, Senate District No. 28, 2026 came from: of $13,398.71 in contributions to Forrest Mandeville, Senate District No. 28, 2026 (cash and goods or services given in kind, net of refunds), 88.8% came from Montana addresses as filed, at least $11,892.80 from 37 contributors, and 6.9% came from out-of-state addresses as filed, at least $920.00 from 4 contributors. The candidate's own money: $585.91 (4.4%). In short, 88.8% of the contributions to Forrest Mandeville, Senate District No. 28, 2026 came from Montana addresses. Address as reported by the filer; not verified. The figures cover every contributor to Forrest Mandeville, Senate District No. 28, 2026, not only those listed below.

Forrest Mandeville, Senate District No. 28, 2026: contributions by where the contributor is from, rows 1 to 3 of 3, data through 2026-10-08

Where from Amount, net of refunds Share Contributors
Forrest Mandeville, Senate District No. 28, 2026: contributions by where the contributor is from, rows 1 to 3 of 3, data through 2026-10-08
Montana addresses as filed $11,892.80 88.8% 37
Out-of-state addresses as filed $920.00 6.9% 4
The candidate's own money $585.91 4.4% 1

Forrest Mandeville, Senate District No. 28, 2026: money by year, data through 2026-10-08

Year Contributions, net of refunds In-kind Spent Still owed Contribution lines
2025 $3,935.25 $56.41 $478.85 $0.00 15
2026 $9,277.55 $129.50 $3,953.24 $438.50 34

Forrest Mandeville, Senate District No. 28, 2026: largest contributors, rows 1 to 25 of 42, data through 2026-10-08

Contributor From Given, net of refunds Of which in-kind Contributions
Forrest Mandeville, Senate District No. 28, 2026: largest contributors, rows 1 to 25 of 42, data through 2026-10-08
Patricia Schreiber Helmville, MT $860.00 1
Rebekah Matovich Columbus, MT $860.00 1
Ed Halland Bridger, MT $770.00 2
Forrest Mandeville (the candidate's own money) Columbus, MT $585.91 $185.91 7
Donna West Columbus, MT $470.00 1
Travis West Columbus, MT $470.00 1
Joseph Cross Columbus, MT $470.00 1
Mike Matovich Columbus, MT $470.00 1
Matt Schreiber Helmville, MT $470.00 1
Jon Metroloulos Helena, MT $470.00 1
Stillwater Republican Central Committee Columbus, MT $470.00 1
Phillips 66 PAC Washington DC, DC $470.00 1
Montana for Affordable Housing Helena, MT $470.00 1
Robert Van Oosten Reed Point, MT $450.00 1
Charlotte Van Oosten Reed Point, MT $450.00 1
Paula Mandeville Columbus, MT $450.00 1
Jeffrey Essmann Billings, MT $450.00 1
Webb Mandeville Columbus, MT $450.00 1
James Mandeville Columbus, MT $450.00 1
Carbon County Republican Women Joliet, MT $300.00 1
Melissa Schlichting Helena, MT $260.25 1
Deborah Hickman Columbus, MT $260.25 1
Diane O'Neil Reed Point, MT $260.25 1
Karen Redman Columbus, MT $250.00 1
Amy Drain Columbus, MT $250.00 1

Forrest Mandeville, Senate District No. 28, 2026: largest contributors, rows 26 to 42 of 42, data through 2026-10-08

Contributor From Given, net of refunds Of which in-kind Contributions
Forrest Mandeville, Senate District No. 28, 2026: largest contributors, rows 26 to 42 of 42, data through 2026-10-08
Jay Redman Columbus, MT $250.00 1
BNSF RAILPAC Ft Worth, TX $200.00 1
MDU Resources Group Good Government Fund Bismark, ND $200.00 1
Joanie Matovich Columbus, MT $200.00 1
Joan Hensley Big Timber, MT $100.00 1
Nadeen Kovanda Columbus, MT $100.00 1
Matthew Regier Kalispell, MT $100.00 1
Ardis Larsen Bigfork, MT $100.00 1
Kent Williams Columbus, MT $100.00 1
Maureen Davey Columbus, MT $100.00 1
John Esp Big Timber, MT $75.00 1
Adrianne Cotton Helena, MT $52.05 1
Walter Baker Columbus, MT $50.00 1
Judi Adams Hamersville, OH $50.00 1
Jay Forseth Columbus, MT $50.00 1
John Hungerford Columbus, MT $50.00 1
Lee Stevens Red Lodge, MT $35.00 1

A candidate may put unlimited personal money into their own campaign in Montana. Self-funding is not a limit breach and is marked above only so it is not misread as an outside donation.

Forrest Mandeville, Senate District No. 28, 2026: largest payments made, rows 1 to 14 of 14, data through 2026-10-08

Paid to Total Payments
Forrest Mandeville, Senate District No. 28, 2026: largest payments made, rows 1 to 14 of 14, data through 2026-10-08
The Mountain $1,558.00 1
Northwest Signs and Banner LLC $1,250.00 1
Hilton Garden Inn $440.00 1
The Political Company $250.00 1
USPS $249.60 2
MTGOP $150.00 1
Vista Print $135.99 1
Montana Republican Party $125.00 1
Columbus IGA Plus $68.95 1
WinRed $68.26 5
OFFICE DEPOT $46.98 1
NameBadge.com $44.36 1
Yellowstone Banks $29.95 1
Secretary of State $15.00 1

Forrest Mandeville, Senate District No. 28, 2026: debts and loans still owed, rows 1 to 1 of 1, data through 2026-10-08

Owed to Still owed Lines
Forrest Mandeville, Senate District No. 28, 2026: debts and loans still owed, rows 1 to 1 of 1, data through 2026-10-08
Forrest Mandeville $438.50 6

Every contribution, itemized from $1 up, as filed, from filed reports. These are the gross contribution lines. A refund is a separate payment and does not appear here.

Forrest Mandeville, Senate District No. 28, 2026: every contribution as filed, rows 1 to 25 of 49, data through 2026-10-08

Date Contributor From Amount
Forrest Mandeville, Senate District No. 28, 2026: every contribution as filed, rows 1 to 25 of 49, data through 2026-10-08
2025-10-20 Diane O'Neil Reed Point, MT $260.25
2025-11-01 Name not recorded $400.00
2025-11-01 Name not recorded $56.41
2025-11-07 Ardis Larsen Bigfork, MT $100.00
2025-11-07 Maureen Davey Columbus, MT $100.00
2025-11-10 Robert Van Oosten Reed Point, MT $450.00
2025-11-10 Charlotte Van Oosten Reed Point, MT $450.00
2025-11-17 Matthew Regier Kalispell, MT $100.00
2025-11-17 Webb Mandeville Columbus, MT $450.00
2025-11-21 James Mandeville Columbus, MT $450.00
2025-11-21 Paula Mandeville Columbus, MT $450.00
2025-12-11 John Esp Big Timber, MT $75.00
2025-12-11 Nadeen Kovanda Columbus, MT $100.00
2025-12-22 Kent Williams Columbus, MT $100.00
2025-12-30 Jeffrey Essmann Billings, MT $450.00
2026-01-05 Deborah Hickman Columbus, MT $260.25
2026-01-05 Mike Matovich Columbus, MT $470.00
2026-01-05 Rebekah Matovich Columbus, MT $860.00
2026-01-23 Joanie Matovich Columbus, MT $200.00
2026-02-13 Matt Schreiber Helmville, MT $470.00
2026-02-13 Patricia Schreiber Helmville, MT $860.00
2026-03-04 Melissa Schlichting Helena, MT $260.25
2026-03-06 Ed Halland Bridger, MT $600.00
2026-03-16 Jay Forseth Columbus, MT $50.00
2026-03-16 Joseph Cross Columbus, MT $470.00

Forrest Mandeville, Senate District No. 28, 2026: every contribution as filed, rows 26 to 49 of 49, data through 2026-10-08

Date Contributor From Amount
Forrest Mandeville, Senate District No. 28, 2026: every contribution as filed, rows 26 to 49 of 49, data through 2026-10-08
2026-03-19 Judi Adams Hamersville, OH $50.00
2026-03-21 John Hungerford Columbus, MT $50.00
2026-03-25 Jon Metroloulos Helena, MT $470.00
2026-03-26 Donna West Columbus, MT $470.00
2026-03-26 Travis West Columbus, MT $470.00
2026-03-29 Walter Baker Columbus, MT $50.00
2026-04-01 Adrianne Cotton Helena, MT $52.05
2026-04-17 Amy Drain Columbus, MT $250.00
2026-04-23 Joan Hensley Big Timber, MT $100.00
2026-06-02 Phillips 66 PAC Washington DC, DC $470.00
2026-06-26 Jay Redman Columbus, MT $250.00
2026-06-27 Karen Redman Columbus, MT $250.00
2026-07-24 Ed Halland Bridger, MT $170.00
2026-08-14 Stillwater Republican Central Committee Columbus, MT $470.00
2026-08-15 Forrest Mandeville Columbus, MT $44.00
2026-08-25 Montana for Affordable Housing Helena, MT $470.00
2026-08-25 BNSF RAILPAC Ft Worth, TX $200.00
2026-08-27 Forrest Mandeville Columbus, MT $21.00
2026-09-02 Carbon County Republican Women Joliet, MT $300.00
2026-09-02 Forrest Mandeville Columbus, MT $26.50
2026-09-05 Forrest Mandeville Columbus, MT $21.00
2026-09-06 Forrest Mandeville Columbus, MT $17.00
2026-09-11 MDU Resources Group Good Government Fund Bismark, ND $200.00
2026-09-11 Lee Stevens Red Lodge, MT $35.00

What this record does not say about Forrest Mandeville, Senate District No. 28, 2026, data through 2026-10-08

It does not say whether Forrest Mandeville won. CERS records candidacies and money, not results. Contribution totals are floors, not exact figures: the same real person or business can appear in the record more than once under spelling variants, and merging those into single identities is ongoing work. A total means "at least this much".