United States 2026 · Every advertiser
William Mostoller for Idaho
This page ran 16 paid political ads on Facebook and Instagram between 1 May 2026 and 16 May 2026. Meta reports $6.1–8.9K of spend, which makes it the 5,140th largest advertiser of the 24,034 pages in our data. Advertiser type: Candidate. Most of its spend was on the Republicans’ side. Race: State. Paid for by William Mostoller For Idaho.
Data from the Meta Ad Library, pulled 4 November 2026. Election on 3 November 2026. · Every ad of this page in Meta’s Ad Library ↗
16
ads
$7.5K
reported spend, range $6.1–8.9K
3.3%
of spend on federal races
$150
median spend per ad
Spend by week the ad started
Tone
Share of the 16 ads with text that our model classified. Attack ads name an opponent.
Most attacked
- Indivisible$2.3K
- Democrat, No Kings Endorsed and Candidates$1.2K
- your Representative$150
- California, Colorado, Oregon, and Washington$50
Targets as the ads name them, by spend; the spellings of Donald Trump are counted together, other names as written.
Topics
Spend by race: Federal 3.3%, State 97%.
Spend by ad language: English 100%.
The costliest ads
The highest-spend ad of each distinct text, as it ran.
⚠️ MUST WATCH - What Happened in Our Republican Primary The day before yesterday nearly half of the Republican primary candidates chose to skip a citizen-organized Republican candidate forum and instead attended a Democrat/leftist event hosted and promoted by Indivisible - a George Soros-funded socialist organization known for pushing illegal immigration, transgender ideology, and the "No Kings" protests. These same groups have openly encouraged independents and Democrats to cross over and vot
8 May 2026 · William Mostoller for Idaho · $1.5–2K · 100K+ impressions · Attack · Ad Library
ALL YOU NEED TO KNOW!!! Democrat, No Kings Endorsed and Candidates attended and accepted the endorsement instead of attending the Republican debate panel on may 6th. I believe in our D25 and D24 voters to see the truth! **Vote for the Strongest Conservative Team in the Republican Primary** William Mostoller Clint Hostetler for Idaho Idaho State Senator Glenneda Zuiderveld Jose Sanchez for Twin Falls County Clerk Knight4Idaho Leslie Wolff for TFC Assessor Lee Gregoire for Twin Falls County Co
16 May 2026 · William Mostoller for Idaho · $1–1.5K · 30K+ impressions · Attack · Ad Library
🇺🇸 PATRIOTS, THIS IS OUR MOMENT! WE ARE OVER THE TARGET AND THEY ARE SCARED! LOOK PAST THE LIES FROM THE MEDIA AND CORPORATE INTERESTS! On May 19th, we have a chance to send a powerful message: Idaho First, Constitution First, and NO MORE BUSINESS AS USUAL! Vote for the strongest conservative team in the Republican Primary: William Mostoller Clint Hostetler for Idaho Idaho State Senator Glenneda Zuiderveld These fighters are ready to: - **HOLD GOVERNMENT SPENDING ACCOUNTABLE** — slash was
15 May 2026 · William Mostoller for Idaho · $1–1.5K · 50K+ impressions · Promotional · Ad Library
Who I am, what I’ve done, and why I’m asking for your vote. Hey District 24. I’m William Mostoller, Idahoan, small business owner, and proud combat veteran of the United States Marine Corps. I served multiple tours in Iraq and Afghanistan and was decorated for actions under fire and leadership. After the Marines I went into contracting overseas. That’s where I saw firsthand how government waste and abuse is costing American taxpayers billions while our own families struggle back home. That exp
8 May 2026 · William Mostoller for Idaho · $600 – $699 · 50K+ impressions · Promotional · Ad Library
I believe in the Second Amendment with every fiber of my being. Our Founders didn’t engrave “shall not be infringed” into the Constitution because they thought it sounded nice. They put it there because they had just fought a tyrannical government and knew that an armed, free people is the only real safeguard against the same thing happening again. Right now we’re watching that exact danger play out in real time: federal and state governments pushing further and further past their constitu
5 May 2026 · William Mostoller for Idaho · $200 – $299 · 50K+ impressions · Promotional · Ad Library
These numbers are from almost 4 years ago… and they’re almost certainly much higher now. According to the Federation for American Immigration Reform (FAIR) published in 2023 study — the most comprehensive data available — illegal immigration already costs Idaho taxpayers a staggering **$427 million gross** every year… with a **net cost of $302 million** after the limited taxes they pay. That breaks down to: - $93.6 million on K-12 education - $19+ million on emergency medical services - $23.1
8 May 2026 · William Mostoller for Idaho · $100 – $199 · 10K+ impressions · Attack · Ad Library
Figures cover domestic political ads paid in dollars, from 4 May 2026. Spend is the sum of Meta’s range midpoints; impressions above one million are reported as “1M+”, so impression figures are floors. Each ad counts in the week its delivery started, with its lifetime spend at our last pull; ads still running before the vote are counted as of 31 October 2026.
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