Incumbent Republican Senator Dan Sullivan secured victory in Alaska's primary election on Tuesday, overcoming a diverse field of challengers in a race that tested the strength of the state's new ranked-choice voting system. Sullivan, who has served in the Senate since 2015, captured the nomination with a commanding lead, according to preliminary results from the Alaska Division of Elections.
Primary Results and Key Numbers
With approximately 95% of precincts reporting, Sullivan garnered 54% of the first-choice votes, well ahead of his nearest competitor, Republican challenger and former state representative Kelly Tshibaka, who received 28%. Democratic candidate Pat Chesbro, a former state senator, secured 12%, while other minor candidates split the remaining 6%. The turnout was notably high, with over 180,000 ballots cast, representing a 15% increase from the 2022 primary.
Ranked-Choice Voting in Action
Alaska's new ranked-choice voting system, first implemented in 2022, played a significant role in the primary. Under this system, voters rank candidates in order of preference. If no candidate receives a majority of first-choice votes, the last-place candidate is eliminated, and their votes are redistributed to the next preference. This process continues until a candidate achieves a majority. In Tuesday's race, Sullivan's first-choice lead was substantial enough to avoid a runoff, as no other candidate could mathematically overtake him even after redistribution of votes from eliminated candidates.
Campaign Dynamics and Key Issues
The primary campaign was dominated by debates over resource development, particularly oil and gas drilling in the Arctic National Wildlife Refuge (ANWR), which Sullivan strongly supports. He also emphasized his record on veterans' affairs and military readiness, noting his role in securing funding for Alaska's military bases. Tshibaka, endorsed by former President Donald Trump, attacked Sullivan as insufficiently conservative, particularly on spending and border security. However, Sullivan's incumbency advantage and broad name recognition proved decisive.
According to political analyst David Logan of the University of Alaska, "Sullivan ran a disciplined campaign that highlighted his seniority and committee assignments, which resonate with voters who value Alaska's influence in Washington. The ranked-choice system did not change the outcome, but it did encourage a more civil tone among the top contenders."
Looking Ahead to the General Election
Sullivan will now face Democratic nominee Pat Chesbro in the November general election. Chesbro, a moderate Democrat, has focused on healthcare access and climate change adaptation, but faces an uphill battle in a state that has not elected a Democrat to the Senate since 2008. The general election is expected to be closely contested, with national attention on whether Alaska will maintain its Republican representation in the Senate.
"This primary shows that Alaska Republicans are united behind Senator Sullivan," said state GOP chair Ann Brown. "We are confident that his record of delivering for Alaska will earn him a third term." The general election is scheduled for November 3, 2026.
