The first group of 96 prospective jurors has been sworn in.

Judge Merchan is now delivering remarks that he said will last about 30 minutes, introducing the case and explaining to prospective jurors their responsibility -- if selected -- to be fair and impartial.

Trump has been leaning forward in his seat listening, with his elbows on the desk.

Dozens of New Yorkers are now being escorted into the courtroom as prospective jurors.

Judge Merchan will deliver a summary of the case before attorneys for both parties have an opportunity to evaluate the prospective jurors' fitness to serve.

According to the pool, 96 individuals will make up the first batch to go through the laborious selection process. Merchan said approximately 200 people have been summoned to the courthouse for potential jury duty on the case.

Trump, during a lengthy break as court officials escorted jurors through security magnetometers, could be seen reclining in his chair and conversing with his attorney Todd Blanche.

Judge Merchan has issued Trump's defense team an ultimatum: Turn over their proposed defense exhibits in 24 hours or be barred from using the materials.

"You have 24 hours," Merchan said. "Anything you don't produce within 24 hours will be precluded."

Defense attorney Todd Blanche pushed back on the deadline, arguing against a prosecutor's assertion that defense withheld materials following a February exhibit deadline for "tactical reasons."

"That is completely false," Blanche said. He asked Merchan for a Wednesday deadline instead, given the demands of the trial.

Merchan declined to grant the request, highlighting the recent flurry of defense motions filed over the last few weeks.

"I don't know how you managed to get those motions out," Merchan said. "The way you choose to use your time is your business."

Judge Merchan has set a hearing on prosecutors' request to hold Trump in contempt for allegedly violating the judge's limited gag order.

After initially setting the hearing for Wednesday, April 24, he rescheduled it for Tuesday, April 23 at 9:30 a.m. ET.

The judge gave Trump's attorneys until April 19 to file their written response.

Prosecutor Christopher Conroy also asked that a copy of the order be served on Trump, and papers were then handed to Trump and defense attorney Todd Blanche at the defense table.

With Donald Trump following along from the defense table, head cocked slightly to the side, David Pecker described the negotiations conducted with Karen McDougal to purchase the exclusive rights to her story about an alleged year-long relationship with Trump.

Pecker said that Trump's attorney Michael Cohen authorized negotiations to begin, then during those negotiations, "Michael was very agitated," constantly asking "Why is this taking so long?"

"To purchase the lifetime rights to Karen McDougal was going to cost $150,000. Plus Karen wanted to restart her career. She wanted to write for the celebrity magazines. She wanted to be on the cover of the life and fitness titles. She had a major problem when her breast implants were removed and she wanted to write about that," Pecker testified.

Pecker said he asked Cohen, "Who is going to reimburse me for this?" He said Cohen responded "Don't worry about it, I'm your friend the boss will take care of it.'"

When prosecutor Josh Steinglass asked Pecker who "the boss" was, Pecker answered "The boss would have been Donald Trump"

Prosecutors then displayed for the jury the contract with McDougal, dated August 5, 2016. It awarded AMI, the Enquirer's parent company, the rights to her story of a relationship she had "with any then-married man." Pecker said "she was referring to Donald Trump."

Pecker testified he needed to "validate" the amount of money AMI was going to pay, so the contract included other provisions, like having McDougal write monthly columns on aging and fitness.

"With respect to campaign laws, I wanted to have the contract be a record that stipulates the services she was going to perform for American Media had a basis for it, the $150,000," Pecker said.

"Was it your primary purpose to buy the life rights?" Steinglass asked. "Yes it was," Pecker responded.

"Were the other provisions to disguise the true nature of this contract?" Steinglass asked. "Yes," Pecker replied, letting out a sigh.