John Thune was reelected by Senate Republicans and will serve as Senate Minority Leader in the new Congress when Democrats take power in January, while House Republicans have elected Jim Jordan as minority leader.
"I appreciated the opportunity to have an open, honest and transparent conversation with my colleagues today, and I am honoured to have their continued trust and support to lead the Senate Republican Conference in the 120th Congress," Thune said in a statement on Tuesday.
Thune pledged to work closely with President Donald Trump and Republican colleagues in the House of Representatives to advance their legislative agenda.
"We have important work ahead of us, and I look forward to serving alongside my colleagues on behalf of the American people," he added.
Earlier, Jordan defeated outgoing House Majority Leader Steve Scalise in a closed-door election, securing 106 votes on Tuesday. Scalise received 73.
The victory elevates Jordan to the top leadership position among House Republicans after years as a prominent conservative voice who frequently clashed with party leaders.
Both men are staunch Trump allies, but the president declined to endorse either candidate.
The contest was a rematch of their 2023 battle for the speakership following the ouster of Kevin McCarthy.
Jordan, a former champion wrestler who has represented Ohio in Congress since 2007, built his reputation as a political brawler and fierce critic of the Republican establishment.
Tom Emmer to continue serving
Meanwhile, Republicans elected Tom Emmer to continue serving as House Minority Whip in the next Congress, securing his position as the party's second-highest-ranking member.
Emmer defeated Representative August Pfluger in a secret ballot vote, winning 103 votes against Pfluger's 76.
House Speaker Mike Johnson of Louisiana, who was not a candidate in the contest, received one vote.
Democrats will hold their leadership elections next week.
