He will appear with Arizona Representative Debbie Lesko, former Arizona Treasurer Jeff DeWitt, Republican Party Chairwoman Kelli Ward and David Bossie, the president of Citizens United. The press conference is expected to begin outside of Arizona’s Republican Party headquarters at 4 p.m. ET.

The address will likely be aired on each of the major news networks, including ABC, NBC, CNBC, CNN and Fox News. Those without access to television can live stream the event on the networks’ respective websites and YouTube accounts. People with Hulu +Live, SlingTV and various other pay-for streaming subscriptions will likely be able to tune into the conference from those platforms when it begins.

Trump is expected to speak about the election, as ballots in Arizona are still being counted. As of Thursday morning, approximately 450,000 ballots were still uncounted. By the time of Trump’s conference, his Democratic opponent, former Vice President Joe Biden, was still in the lead in Arizona with 50.0 percent of the vote. Eighty-six percent of Arizona’s votes had been counted as of 3:51 p.m. ET.

As Biden nears the 270 electoral votes needed to secure the White House, the Trump campaign remains publicly confident that the final numbers will be in the president’s favor and suggested that an official victory for Trump would be declared by Friday.

“We believe that President Trump will again, win the race and we think that by, as soon possibly the end of tomorrow on Friday, it will be clear to the American public that President Trump and Vice President Pence will serve another four years in the White House,” Jason Miller, a Trump campaign senior advisor, told reporters during a press call on Thursday.

Meanwhile, Bill Stepien, Trump’s campaign manager, noted on the call that “Donald Trump is alive and well.”

While a number of states still have ballots to count through, Trump is already taking legal action against some. His campaign has announced lawsuits against states like Michigan and Pennsylvania, and has demanded a recount in Wisconsin. He threatened to go to the Supreme Court, claiming voter fraud, as early as Wednesday morning when an official winner had not yet been declared and hundreds of thousands of mail-in votes were still in need of counting.

“This is a major fraud on our nation. We want the law to be used in a proper manner. So we’ll be going to the U.S. Supreme Court. We want all voting to stop. We don’t want them to find any ballots at 4 in the morning and add them to the list, OK?” Trump said, speaking from the White House, on Wednesday.