Kevin Hern Runs for Senate in Oklahoma After Mullin’s Homeland Security Nomination

Oklahoma Senate Race Shifts as Hern Enters Fray

Republican Representative Kevin Hern of Oklahoma announced Wednesday his intention to run for the Senate seat currently held by Markwayne Mullin, a move triggered by President Donald Trump’s nomination of Mullin to be the next Secretary of Homeland Security. Hern’s decision sets the stage for a competitive race in Oklahoma, and introduces a wrinkle into the process of filling Mullin’s potential vacancy should he be confirmed by the Senate. The unfolding situation highlights the interplay between federal appointments and state-level political maneuvering.

Hern, who represents Oklahoma’s 1st congressional district, is the first candidate to formally declare his candidacy following Trump’s announcement regarding Mullin. He currently serves as the chairman of the House Republican Policy Committee and also sits on the House Ways and Means Committee. Prior to his political career, Hern was a businessman, owning multiple McDonald’s franchises and other ventures.

Trump’s Cabinet Reshuffle and the Oklahoma Succession

The catalyst for this shift in Oklahoma’s political landscape is President Trump’s decision to replace Homeland Security Secretary Kristi Noem with Senator Mullin. Trump announced his intention last week, stating he wanted Mullin to begin in the Cabinet role on March 31st. Mullin, in turn, has publicly expressed his appreciation for the nomination, describing his relationship with Trump as a strong one. This move has created a ripple effect, opening up a Senate seat in Oklahoma and prompting Hern to launch his campaign.

Oklahoma’s constitution dictates a specific process for filling a Senate vacancy. Should Mullin be confirmed as Homeland Security Secretary, Governor Kevin Stitt will appoint an interim senator to serve until the next general election, which will be held in January 2027. Though, a key provision of Oklahoma law stipulates that any appointee must sign an affidavit pledging not to run for a full term in the subsequent election. This stipulation effectively prevents Stitt from appointing a candidate who might pose a challenge to Hern or other potential contenders in the 2026 Senate race.

Hern’s Political Background and Policy Positions

Kevin Hern’s entry into the Senate race brings a seasoned voice from the House Republican caucus. Elected to Congress in 2018, he has established himself as a conservative voice focused on fiscal responsibility and limited government. As chairman of the House Republican Policy Committee, Hern plays a key role in shaping the party’s legislative agenda. His position on the Ways and Means Committee gives him influence over tax and trade policy.

Hern’s background as a businessman is central to his political identity. He frequently emphasizes his experience creating jobs and navigating the challenges of the private sector. His business acumen could resonate with voters in Oklahoma, a state with a strong entrepreneurial spirit. However, details regarding his specific policy stances on key national issues, beyond broadly conservative principles, will likely be scrutinized as the campaign progresses.

The Oklahoma Context: A Deeply Republican State

Oklahoma is a reliably Republican state, making the primary election the crucial contest in determining the next senator. The state has not elected a Democrat to the Senate since 1990. This political reality suggests that the winner of the Republican primary will be heavily favored in the general election. The dynamics of the primary will likely center on ideological purity, experience, and the ability to connect with the state’s conservative electorate.

Markwayne Mullin himself won a special election in 2022 to fill the seat vacated by the retirement of Jim Inhofe, who served for nearly three decades. Mullin’s background is markedly different from that of many traditional politicians; he is a former mixed martial arts fighter and entrepreneur who built a successful plumbing business. His appeal to a broad range of voters contributed to his victory in a crowded special election. Inhofe’s long tenure had established a strong conservative presence in the Senate, and Mullin positioned himself as a continuation of that legacy.

Navigating the Appointment Process and Potential Candidates

Governor Stitt now faces the task of appointing an interim senator. Given the legal requirement that the appointee not run for a full term, Stitt will likely seek a candidate who is not politically ambitious or who is willing to forgo a Senate run. This constraint narrows the field of potential appointees and could lead to the selection of a lesser-known figure. Speculation is already circulating regarding potential candidates, but Stitt has not yet announced any frontrunners.

The timing of Mullin’s confirmation hearings will be critical. If the Senate moves quickly to confirm him, Stitt will have a limited window to make an appointment. Any delay in the confirmation process could prolong the uncertainty surrounding Oklahoma’s Senate representation. The confirmation process itself could grow a focal point of political debate, particularly if Democrats seek to scrutinize Mullin’s record or raise concerns about his qualifications.

Implications for the Senate Balance

Although Oklahoma is a safe Republican seat, the shifting dynamics could have minor implications for the balance of power in the Senate. A prolonged vacancy, even if temporarily filled by an appointee, could affect the Senate’s ability to conduct business, particularly on closely contested votes. The confirmation of Mullin to Homeland Security is also significant, as it would give President Trump a key ally in a critical national security position.

The broader context of the 2026 midterm elections adds another layer of complexity. Control of the Senate will be at stake, and the Oklahoma race will be closely watched by both parties. Hern’s candidacy, and the potential for a competitive primary, could draw national attention to the state and influence the overall narrative of the midterm elections. The race is expected to be closely watched by national political observers.

Looking Ahead: The coming weeks will be crucial as the confirmation process for Markwayne Mullin unfolds and Governor Stitt weighs his options for an interim appointment. Kevin Hern is expected to actively campaign for the Senate seat, outlining his vision for Oklahoma and seeking to differentiate himself from potential primary challengers. The interplay between these developments will shape the future of Oklahoma’s representation in the United States Senate.