Trump transition: Trump announces Matt Gaetz as attorney general, Marco Rubio as secretary of state

As Trump continues to round out his cabinet, the job of treasury secretary remains in flux, with the co-chair of Trump's transition team actively vying for the job, sources familiar with the matter told ABC News.

Howard Lutnick is looking to be tapped as treasury secretary, sources said, a move that comes as investor and hedge fund manager Scott Bessent is also a top contender for the role.

Bessent traveled to Mar-a-Lago as recently as Friday to meet with Trump about the job, the sources said.

Lutnick, on the other hand, spends hours with Trump nearly each day, presenting candidates for top roles in the administration. As such, the move by Lutnick to attempt to get a cabinet position for himself has frustrated some close to Trump.

Sources caution the job is still in flux and neither man could get the job -- with the potential for other candidates to emerge.

One potential dark horse for the job, one source told ABC News, is former Trump administration trade representative Robert Lighthizer, who Trump sees as an aggressive advocate for his tariff-heavy approach to international trade.

ABC News reports that the Republicans are projected to retain control of the U.S. House of Representatives.

Republicans are projected to control all three branches of government -- The U.S. House of Representatives, Senate and the White House.

Trump announced his senior staff on Wednesday, bringing back some of his well-known names from his first term and those who helped on his campaign.

Dan Scavino, one of Trump's long-time allies, was named assistant to the president and deputy chief of staff. Stephen Miller was named assistant to the president and deputy chief of staff, a move reported earlier this week.

James Blair, the Republican National Committee political director and campaign aide, has been named assistant to the president and deputy chief of staff for legislative, political and public affairs. Taylor Budowich will serve as assistant to the president and deputy chief of staff for communications and personnel. He was a senior member of several of Trump's PACs.

Senate Republicans on Wednesday elected John Thune to be the next Republican leader, succeeding Mitch McConnell in a position he's held for 17 years.

Thune beat out Sen. John Cornyn in a second round of votes, securing enough to clinch the position.

This was by secret ballot and behind closed doors. Thune is expected to address the press at a press conference later today.