Mark Lamb
Candidate for U.S. House of Representatives - District 5
Arizona · Congressional District 5
Mark Lamb won the primary and is the party's nominee for the general election. Won the July 21, 2026 Republican primary over Daniel Keenan, 58.7% to 41.3%. Faces Democratic nominee Elizabeth Lee in the November 3, 2026 general election.
Source: marklamb.us · Last verified: October 23, 2026
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Statement
Lamb's campaign says he will work to secure the border, restore order to the immigration system, defend the Constitution, support law enforcement, and advance an economy where families and small businesses can thrive. It describes him as a constitutional conservative and retired sheriff rather than a career politician.
Biography
Mark Lamb is the Republican nominee for Arizona's 5th Congressional District, an open seat being vacated by Rep. Andy Biggs, who is running for governor. Lamb served two terms as Pinal County sheriff beginning in 2017, after earlier work with the Salt River Police Department and the Pinal County Sheriff's Office; before entering law enforcement he owned a pest control business. He ran for U.S. Senate in 2024, losing the Republican primary to Kari Lake. His campaign, endorsed by President Donald Trump, centers on border security, support for law enforcement, the economy and limited government. Other endorsements include House Speaker Mike Johnson, the National Association of Police Organizations, the Mesa Chamber of Commerce and, after the primary, the NRA Political Victory Fund. During the primary, the Arizona Republic published reporting alleging extramarital sexting relationships, and Lamb faced claims that he does not live in the district after his family opened a ranch in Tennessee; his campaign has denied the allegations. Lamb won the July 21, 2026 Republican primary over Daniel Keenan, 58.7% to 41.3%, and faces Democratic nominee Elizabeth Lee in the November 3, 2026 general election.
Past offices held
Positions
Issue Stances
Water Policy
SupportsLamb says large data center projects should not receive automatic approval, should be evaluated for their water and power use, and should pay for the infrastructure they require; he says he would fight for Arizona's water interests in Congress.
"Growth should pay for growth."
Education Funding
No official stance on record.
Border Security & Immigration
SupportsLamb supports stronger border security, law enforcement support, ICE, Border Patrol, and policies addressing illegal immigration, cartel activity, human trafficking, and drug smuggling.
Housing Affordability
No official stance on record.
Election Integrity
SupportsLamb's campaign page lists election integrity and government accountability among his frequent issue focuses.
Healthcare Access
No official stance on record.
Public Safety & Criminal Justice
SupportsLamb supports stronger prosecution, accountability for repeat offenders, support for law enforcement, and policies that prioritize public safety.
Energy Policy
SupportsLamb's campaign page says he supports America First policies including energy independence.
Economic Development & Jobs
SupportsLamb links safe communities, economic opportunity, rapid growth, and America First policies in his campaign messaging.
Reproductive Rights
No official stance on record.
Transportation & Infrastructure
No official stance on record.
Government Spending & Taxation
SupportsLamb criticizes growing national debt and government overreach and emphasizes government accountability.
Legislature
Legislative Voting Record
No voting record on file.
Voting records are only available for candidates who have held legislative office.
Ballot
Ballot Measure Stances
No ballot measure stances on file yet.
Coverage