Republicans on Saturday appeared close to clinching control of the US House of Representatives, a critical element for Donald Trump to advance his agenda when the president-elect returns to the White House in January.

With votes still being counted from the 5 November general election, Republicans had won 212 seats in the 435-member House, according to Edison Research, which projected on Friday night that Republican Jeff Hurd had enough votes to keep Republican control of Colorado’s third congressional district.

Democratic Representative Marie Gluesenkamp Perez won re-election to a US House seat representing Washington state on Saturday, the Associated Press reported, defeating Republican Joe Kent in a rematch of one of the closest races of 2022.

Gluesenkamp Perez won the seat by just more than 2,600 votes two years ago. Prior to her election, Gluesenkamp Perez ran an auto shop in a rural part of the district, which featured heavily in her campaign.

The Republican-leaning district, which Donald Trump carried in 2020, includes the south-western portion of the state and some Portland, Oregon, suburbs that spill into Washington state.

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Republicans need to win six more seats to keep control of the House and they already have enough victories to wrest control of the US Senate from Democrats, though Edison Research projected late on Friday that Democratic US Senator Jacky Rosen had won re-election in Nevada.

A first-term moderate in a presidential battleground state, Rosen was among the GOP’s top targets. She campaigned on lowering costs for the middle class, defending abortion rights and tackling the climate crisis. Over the summer, she introduced legislation that would allow extreme heat to qualify as a disaster under federal law, pointing to heatwaves that have devastated the west.

With Trump’s victory in the presidential election and Republican control of the Senate already decided, keeping hold of the House would give Republicans sweeping powers to potentially ram through a broad agenda of tax and spending cuts, energy deregulation and border security controls.

Results of 19 House races remain unclear, mostly in competitive districts in western states where the pace of vote counting is typically slower than in the rest of the country.

Ten of the seats are currently held by Republicans and nine by Democrats. Fourteen seats had widely been seen as competitive before the election.

Republican senators will decide next week who will serve as the party’s leader in the Senate in 2025, with John Thune, John Cornyn and Rick Scott vying for the job. On Saturday, Senators Bill Hagerty and Rand Paul endorsed Scott over the more senior Thune and Cornyn, who have been viewed as favorites.

Associated Press contributed to this report