WASHINGTON (AP) — In a feat of determination, New Jersey Democratic Sen. Cory Booker held the Senate floor with a marathon speech that lasted all night and into Tuesday evening, setting a historic mark to show Democrats’ resistance to President Donald Trump’s sweeping actions.

Booker took to the Senate floor on Monday evening, saying he would remain there as long as he was “physically able.” More than 24 hours later, the 55-year-old senator, a former football tight end, was still going. It set the record for the longest continuous Senate floor speech in the chamber’s history, though Booker was assisted by fellow Democrats who gave him a break from speaking by asking him questions on the Senate floor.

It was a remarkable show of stamina as Democrats try to show their frustrated supporters that they are doing everything possible to contest Trump’s agenda. Yet Booker also provided a moment of historical solace for a party searching for its way forward: By standing on the Senate floor for more than a night and day and refusing to leave, he had broken a record set 68 years ago by then Sen. Strom Thurmond of South Carolina, a segregationist, to filibuster the advance of the Civil Rights Act in 1957.