Mark Lamb
Republican · AZ · Former Pinal County Sheriff
Mark Lamb is a Republican candidate in the August 4, 2026 primary for U.S. Representative for Arizona's 5th Congressional District (open seat).
Campaign Finance Information — U.S. Representative, Arizona's 5th Congressional District
Campaign Finance Information · U.S. Representative, Arizona's 5th Congressional District · August 4, 2026
Data last updated July 24, 2026
- Raised
- $1,222,217
- Spent
- $978,791
- Cash on hand
- $243,426
- Debts
- $0
Top disclosed occupations of direct donors
- RETIRED$228,609
- OWNER$57,369
- CEO$37,144
- HOMEMAKER$17,108
Show 1 more
- REAL ESTATE$13,542
Source: FEC · 2026 cycle · fec.gov
Track record
Anti-Corruption
· 1 record
As Pinal County sheriff, Mark Lamb incorporated the American Sheriff Foundation in 2018; Arizona Luminaria reported that the foundation failed to file several annual reports, had its IRS tax-exempt status revoked, and faced administrative dissolution after state officials reviewed its noncompliance.
December 20, 2024Against
Source: azluminaria.org · researched July 6, 2026
Immigration
· 1 record
During Lamb's tenure as sheriff, the Pinal County Sheriff's Office operated anti-smuggling and narcotics units targeting human and drug smuggling corridors, including Operation Stonegarden support and interdiction work along I-8 and I-10.
May 1, 2026For
Source: en.wikipedia.org · researched July 6, 2026
National Defense
· 1 record
During Lamb's tenure as sheriff, the Pinal County Sheriff's Office operated anti-smuggling and narcotics units targeting human and drug smuggling corridors, including Operation Stonegarden support and interdiction work along I-8 and I-10.
May 1, 2026For
Source: en.wikipedia.org · researched July 6, 2026
General
· 2 records
On October 30, 2025, former Pinal County Sheriff Mark Lamb announced his candidacy for Arizona's 5th Congressional District.
October 30, 2025
Source: axios.com · researched July 14, 2026
On May 3, 2023, Pinal County Sheriff Mark Lamb introduced and read the county proclamation recognizing Peace Officers Memorial Week and Peace Officers Memorial Day; the Board of Supervisors approved the proclamation.
May 3, 2023
Source: pinal.novusagenda.com · researched July 14, 2026
Integrity and Ethics
· 2 records
On June 22, 2026, the Pinal County Attorney's Office closed its review of allegations concerning former Sheriff Mark Lamb, reporting that the evidence reviewed did not establish an Arizona criminal-law violation.
June 22, 2026
Source: azfreepress.com · researched July 14, 2026
As of January 1, 2025, Arizona Corporation Commission records listed Mark Lamb as president and chairman of the American Sheriff Foundation, which the Commission recorded as administratively dissolved for missed annual reports.
January 1, 2025
Source: arizonabusinesscenter.azcc.gov · researched July 14, 2026
Elections
- U.S. Representative, Arizona's 5th Congressional District · August 4, 2026 · Congressional District 5 (119th Congress), Arizona
Profile last researched July 6, 2026.