First off, it was not a filibuster. But Booker's historic 25-hour speech broke the Senate record, and was a startling challenge to Trump’s agenda

The Democrat, 55, who has been attacking cuts under the Trump administration, vowed to keep going "as long as I am physically able."

Who is Cory Booker? Will his marathon speech be the longest filibuster in US history? Here's what to know so far and how to watch live stream.

Cory Booker broke the record for a standing filibuster by speaking for 25 hours, surpassing the 1957 record of Sen. Strom Thurmond, who attempted to filibuster the Civil Rights Act. Rating: Mostly True (About this rating?

Sen. Cory Booker has been speaking for 17 hours straight as of noon Tuesday. Is it the longest speech in Senate history? What to know.

U.S. Sen. Cory Booker (D- N.J.) took the Senate floor Monday night with the intention of speaking for as long as possible. The lawmaker began his marathon speech at 7 p.m., criticizing Elon Musk and President Donald Trump.

Senator Cory Booker's marathon Senate floor speech has just broken Ted Cruz's filibuster speech record. Booker, who has held the floor since about 7 p.m. ET on Monday, has just surpassed the Texas Republican's record of 21 hours 19 minutes.

Cory Booker joins history's longest Senate speeches with 14-hour protest. See how his compares to the all-time record filibusters in the U.S. Senate.

But another, New Jersey’s Cory Booker, chose to stay in the Senate and speak against Trump’s agenda “for as long as I am physically able.” Calling the occasion a “moral moment,” Booker, who was not one of the Democrats who caved on the spending bill,