On his way into the courtroom for the day's proceedings, Trump once again alleged that the trial constitutes election interference, claiming that the proceedings are unfairly keeping him off the campaign trail.

"Everybody knows that I'm here instead of being able to be in Pennsylvania and Georgia and lots of other places campaigning, and it's very unfair," he told reporters.

"It's a very, very sad day in America," he said. "I can tell you that."

The former president is seated at the defense table between his lawyers Todd Blanche and Emil Bove.

-Mike Pappano

The proceedings are underway in former President Donald Trump's hush money trial. Trump and Manhattan District Attorney Alvin Bragg are both in the courtroom.

Three prosecutors -- Joshua Steinglass, Matthew Colangelo, and Susan Hoffinger -- are seated at the counsel table.

Bragg is seated in the front row of the gallery with approximately a dozen lawyers and staff from his office.

The first witness prosecutors with the Manhattan DA's office plan to call is former National Enquirer publisher David Pecker, according to two sources familiar with the matter.

ABC News previously reported that prosecutors planned to call Pecker as a witness, but sources now say he's expected to be the first witness to take the stand.

Pecker served as the longtime chief executive of American Media Inc., which published the National Enquirer.

Shortly after Trump announced his 2016 presidential campaign, Pecker met with Trump and agreed to act as the "eyes and ears" of the campaign by looking out for and killing negative stories about Trump, according to the Manhattan DA.

As part of the arrangement, Pecker allegedly directed a deal to pay $30,000 to a former Trump Tower doorman regarding the false allegation that Trump allegedly fathered a child out of wedlock, prosecutors say. Then-Trump attorney Michael Cohen allegedly insisted that the deal stay in place even after AMI discovered the allegation was false, and AMI paid the doorman, according to the Manhattan DA.

-Katherine Faulders

After a week-long selection process, the jurors in Donald Trump's New York hush money case are scheduled to hear opening statements this morning in the first criminal trial of a former U.S. president.

To prove their case, lawyers for Manhattan District Attorney Alvin Bragg need to convince twelve jurors beyond a reasonable doubt that Trump repeatedly falsified records to unlawfully influence the 2016 presidential election.

"This case has nothing to do with your personal politics or your feelings about a particular political issue," prosecutor Joshua Steinglass told prospective jurors on Thursday. "It's not a referendum on the Trump presidency, a popularity contest, or any indication of who you plan to vote for this fall. This case is about whether this man broke the law."

Trump's lawyers are expected to focus their efforts on going after the credibility of prosecution witnesses, suggesting the case itself is politically motivated and arguing that the former president never intended to commit a crime.

The first six jurors selected to serve in Donald Trump's criminal hush money trial represent a diverse cross-section of New York City, according to their biographical information. Here's a brief sketch of each juror, whose identities are being kept private for security reasons.

Juror No. 1 is a middle-aged salesman who immigrated to the United States from Ireland. He lives in West Harlem and said he normally gets his news from the New York Times, Daily Mail, Fox News and MSNBC. In his spare time, he said he enjoys doing "anything outdoorsy."

Juror No. 2 works as an oncology nurse at Memorial Sloan Kettering. She lives with her fiancé and enjoys taking her dog for walks in the park. She said she gets her news from The New York Times, CNN, Google, and Facebook.

Juror 3 is a corporate attorney who moved to New York from Oregon five years ago. He has worked at two major white-shoe law firms in New York. He said he normally gets his news from The New York Times, Wall Street Journal, and Google. In his spare time, he said he enjoys hiking and running.

Juror No. 4 said he finds the former president to be "fascinating and mysterious." Originally from Puerto Rico, he has lived in the Lower East Side for the last 40 years. He is a self-employed IT consultant who attended one year of college and has been "married for a long time." He normally gets his news from the Daily News, The New York Times, Google.

Juror No. 5 was the only potential juror who raised her hand when lawyers asked if they had ever heard of Trump's other criminal cases. A life-long New Yorker, she currently works as an ELA teacher in a charter school and lives in Harlem. She normally gets her news from Google and TikTok but said that she "doesn't really care for the news."

Juror No. 6 is a software engineer who works for the Walt Disney Company, which is the parent company of ABC News. She grew up in New York City and lives in Chelsea with three roommates. She said she gets her news from The New York Times and TikTok. In her spare time, she said she enjoys plays, restaurants, dancing, and watching TV.