President Donald Trump delivers his State of the Union address to a joint session of the U.S. Congress on Capitol Hill January 30, 2018 in Washington, DC. Jim Bourg | Getty Images

President Donald Trump, a uniter? That's the approach advisers say Trump will take in his first State of the Union address delivered under divided government. A president who's mocked everyone from women to the U.S. intelligence community, foreign leaders and members of Congress is expected to speak Tuesday night of setting aside hard feelings and moving forward. For an idea of how that goes over, keep an eye on House Speaker Nancy Pelosi, seated behind him and over his shoulder, and the record number of women and minorities who dot the audience after the November 2018 elections. And listen for how enthusiastically Republicans applaud Trump's outreach. What else to watch as Trump addresses the nation at 9 p.m. EST.

Amped atmosphere

Everything about the event, including the date, is framed by the longest government shutdown in history. Pelosi suggested Trump postpone the scheduled Jan. 29 speech until the government reopened. Trump, who commands the armed forces, then put off Pelosi's trip overseas on a military plane. She then formally yanked the welcome mat by refusing to hold a vote to allow Trump to address a joint session of Congress. The tug of war ended Jan. 25, when Trump lifted the shutdown without getting new money for the wall he wants to build on the U.S.-Mexico border. Pelosi then re-invited Trump to deliver the address on Tuesday and he agreed. Trump has vowed to get his border wall and has threatened to declare a national emergency to pay for it without Congress' approval.

Trump's entrance

The pomp begins the moment House Sergeant-at-Arms Paul Irving yells from the back of the chamber, "Madam Speaker, the president of the United States!" Trump will then walk down the center aisle flanked by Republican leaders, shaking hands with many of the lawmakers who grabbed seats earlier in the day in hopes of making it into photos and video with the president. Republicans will burst into raucous hoots and applause. Not likely to extend a hand to Trump: The star of the Democratic freshmen, Rep. Alexandria Ocasio-Cortez of New York. "But I'll be there and I'll be present to see and listen to what's going on," she told TMZ.

Who's in the room

It's a rare moment when members of the three separate and co-equal branches of government meet under the same roof. The night's key visual will be Pelosi sitting behind Trump along with Vice President Mike Pence. All 535 members of Congress are invited, along with members of Trump's Cabinet and the justices of the Supreme Court, led by Chief Justice John Roberts. The balcony tells its own story. To the left, Trump will nod to first lady Melania Trump and the administration's guests. Seated elsewhere in the gallery will be lawmakers' invited guests, many chosen to send messages reinforcing each party's agenda. This year the guests include people who have suffered because of the shutdown and those pushing for tougher immigration laws.

Designated survivor

It's not just a television show. By tradition, one Cabinet secretary is closeted away at a secure, undisclosed location to ensure continuity of government in case disaster strikes while government leaders attend the speech. Agriculture Secretary Sonny Perdue was last year's "designated survivor." But Trump's choice this year could be limited by the number of "acting" secretaries in the Cabinet. Only Senate-confirmed secretaries (and natural-born citizens) in the line of succession to the presidency can assume control of government in a crisis. That means Acting Defense Secretary Patrick Shanahan, Acting Attorney General Matthew Whitaker, Acting Interior Secretary David Bernhardt and Transportation Secretary Elaine Chao can't fill the role of designated survivor. Chao is a naturalized U.S. citizen who was born in Taiwan.

What's happening in the audience

Look for women on the Democratic side of the aisle wearing white, the color favored by early 20th century suffragettes and now worn by those who want Trump to easily spot his new opponents. Listen for boos, hisses or silence from the newly empowered Democratic side when Trump speaks. Note whether Trump can raise everyone's gaze and hit feel-good themes that inspire both sides to applaud. For instance, who's against "unity?" Both Trump and Georgia Democrat Stacey Abrams, who will deliver the rebuttal, have used that idea to preview their remarks.

Democrats are running for president

Nearly a dozen Democrats who dream of succeeding Trump serve in Congress. They will be sizing up the president and each other as well. Watch the body language among the would-be Democratic presidents: Who's talking to whom, who gets or gives a hug or a kiss, whose heads are bowed in hushed conversation. Also watch their body language toward Trump. Cameras will be trolling the audience — and the presidential dreamers know it — to see if they can be caught responding with an eye roll or head shake.

Abrams after words