Election 2024 updates: With Arizona, Trump sweeps all 7 swing states

Following the results of the presidential election, President-elect Donald Trump's transition team operation has begun for his second White House term.

"In the days and weeks ahead, President Trump will be selecting personnel to serve our nation under his leadership and enact policies that make the life of Americans affordable, safe, and secure," Linda McMahon and Howard Lutnick, co-chairs of the Trump-Vance transition team said in a statement.

"As he chooses the best people to join his team and best policies to pursue, his transition team will ensure the implementation of President Trump’s common sense agenda starting on Day 1," the co-chairs said.

Washington, D.C. Mayor Muriel Bowser said in a statement on Wednesday that the city "will actively support the incoming Trump Administration’s transition process and the 60th Presidential Inauguration of President-elect Trump."

Bowser’s office has been working since September to prepare for Jan. 6., the day of the Electoral College vote certification, and Inauguration Day.

Her team had plans in place for either a Trump or Harris victory.

Republicans, despite their opposition to D.C. statehood, have worked with Bowser on several local initiatives including the RFK Stadium renovation. She has in recent years forged a working relationship with Republicans, particularly congressmen Jim Jordan and James Comer, as well as other lawmakers frustrated with crime in the city.

-ABC News' Beatrice Peterson

President Joe Biden will address the nation at 11 a.m. on Thursday from the Rose Garden, the White House said on Wednesday.

-ABC News' Michelle Stoddart

House Speaker Mike Johnson formally launched his bid to continue serving as leader in a letter sent to GOP colleagues on Wednesday.

"I'm ready to take the field with all of you, and I am humbly asking for your support to continue leading this Conference as your Speaker. It has been the honor of my lifetime to serve with you thus far, and I look forward to playing the biggest offense of our lives. We have a country to save—and we will," Johnson said in the letter obtained by ABC News.

Johnson represents Louisiana in the House.

House GOP leadership elections will take place behind closed doors on Nov. 13.

Johnson said, "as we have planned and expected, the latest data indicates that we will also hold – and likely grow—our Republican majority in the House, even though we faced a map with 18 Biden-won seats."

ABC News has not yet projected the House majority.

It was just a little over a year ago when Republicans elected Johnson as House speaker after ousting former Speaker Kevin McCarthy.

-ABC News' Lauren Peller