Democratic leader says party expects at least 255 House seats and promises to deliver on affordability.

Democratic House leader Hakeem Jeffries has celebrated his party’s sweeping victory in the United States midterm elections, calling the results an “American tsunami” as Democrats have taken control of both chambers of Congress.

“It wasn’t simply a blue wave. It was an American tsunami,” Jeffries said at a news conference on Wednesday, a day after Democrats pulled off upsets in several Republican strongholds.

Jeffries said Democrats expect to win at least 255 House seats once all vote counts are final, giving the party what he described as a historic majority.

“The American people have chosen common sense over corruption, chaos and cruelty,” he said.

Jeffries, who is set to become the first Black Speaker of the House when the new Congress takes office in January, said the results showed Americans wanted a change in direction.

“We’re humbled by the outcome,” he said, promising a “relentless effort to make life more affordable for everyday Americans”.

Speaking earlier on MS Now’s Morning Joe, Jeffries said Democrats would focus on getting things done rather than seeking revenge against President Donald Trump and his allies.

“We ran on affordability. We won on affordability. And now it’s our job to govern on affordability,” he said.

Democrats campaigned on bringing down the rising costs of groceries, petrol, housing and healthcare, which have left Americans feeling increasingly squeezed. But with Trump’s threats to use his presidential veto to block legislation he’s opposed to, Democrats may struggle to push through new laws even with a majority in Congress.

Jeffries pointed to a bipartisan housing affordability bill passed in July as an example of the types of legislation Democrats could pursue. The bill became law without Trump’s signature after he dismissed it as “a yawn” and “so unimportant”.

Jeffries also said Democrats would work to hold the Trump administration accountable for any wrongdoing, even as he acknowledged Americans wanted them to get things done, not “get even”.

“There’s a cost to corruption,” he said, adding that Democrats would follow the facts and the law, and “let the chips fall where they may”.