All of a sudden, President-Elect Donald Trump has to pick a Cabinet.

Trump stunned the nation and world when he won the race for the White House early Wednesday morning.

Giuliani was mayor during the attacks of Sept. 11, 2001. He ran the largest city in the nation — where he commanded about 40,000 police.

Now he has to pick a Cabinet and top advisers. He also has to decide on a ninth Supreme Court pick to replace the late Justice Antonin Scalia, a conservative who was the crucial fifth vote in swing cases.

But it’s his first picks for the Cabinet that will send a powerful message — so he must take care to pick experienced and steady hands. One of Trump’s weaknesses is also what propelled him in the election: He has never held political office or served in the military. This makes his election a first.

Now, according to former New York City Mayor Rudy Giuliani, Trump is sorting through 100 names for the Cabinet and other top advisory posts. It is unlikely there will be a lot of first-timers, but there will likely be a few. The Heritage Foundation is helping him make the sort.

Attorney General
Several of the president-elect’s most loyal, most experienced supporters in his inner circle all match well with the position of attorney general.

The pick of his chief law enforcement officer will be among the most important. The nation’s top cop is the attorney general. Under President Barack Obama’s administration, the office has been widely seen as being used for political purposes.

Obama’s first pick, Eric Holder, was a hyper-partisan liberal who once scolded the nation for its cowardice to address racial issues. His successor, Loretta Lynch, was the subject of continuous allegations of interfering in the Hillary Clinton email server investigation. She met with former President Bill Clinton on an airport tarmac just a week before the FBI cleared his wife of wrongdoing.

Trump must pick an attorney general who is seen as a paragon of virtue — a tough but fair cop.

A leading candidate for this is New Jersey Gov. Chris Christie, one of Trump’s early supporters. Christie is a colorful former U.S. attorney and is leading Trump’s transition team.

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Christie, Trump’s once 2016 rival in the GOP primaries, backed him early after leaving the contest himself. Since that endorsement, he has been a loyal supporter for Trump. That loyalty, combined with Christie’s experience, will likely land him somewhere significant in the new administration.

Christie’s lone dark spot is “Bridgegate,” in which two of his aides were just found guilty. Christie has never been charged or explicitly implicated in the matter, but his appointment to a Cabinet post would likely launch a painful public litigation of the scandal. Another possible place for Christie would be as Trump’s White House chief of staff. That position carries immense influence and importance and doesn’t require congressional approval — which would save Christie from a potentially messy assault from the Left and the media over Bridgegate.

Another experienced and loyal hand for the AG position is former New York Mayor Rudy Giuliani. Politico reports the former U.S. attorney for southern New York is the front-runner for the post.

The former New York City mayor could serve as attorney general, or as head of several other departments, including Homeland Security. Giuliani was mayor during the attacks of Sept. 11, 2001. He ran the largest city in the nation — where he commanded about 40,000 police.

Another leading candidate for AG is Alabama Sen. Jeff Sessions, who was the first senator to indicate his support for Trump. Sessions would also be immensely qualified for the job.

He served as U.S. attorney for the Southern District of Alabama from 1981 to 1993 and as attorney general for Alabama for an additional two years before being elected to the U.S. Senate in 1996.

Sessions has been a key policy adviser to Trump, especially on illegal immigration and unfair trade practices — two issues the conservative Republican blames for weighing down the U.S. economic engine.

Sessions is a sure bet to get something, unless both he and Trump decide he would be more valuable to the administration from where he is in the Senate.

State Department
Rumors are already circulating in D.C. that former House Speaker Newt Gingrich, a Republican from Georgia, is interested in the State Department. Gingrich was speaker from 1995 to 1999, and has extensive experience as a legislator.

Gingrich also ran for president in 2012. But is he a diplomat? Most people know Gingrich as a debater and policy adviser. He might be better as a pick for Homeland Security.

A likely pick for a major post, especially State, is U.S. Sen. Bob Corker, a Tennessee Republican. Corker has been a supporter of Trump, and was considered as a possible candidate for vice president. Corker would have to give up a Senate seat, but his successor would be picked by a Republican governor.

Corker, the former mayor of Chattanooga, first took Senate office in 2007. Look for Corker to emerge as a top candidate, as he is the chairman of the Senate Foreign Relations Committee.

A tougher nomination fight for State would be John Bolton, former ambassador to the United Nations under President George W. Bush. Bolton was disliked by the Democrats and could not get Senate confirmation 11 years ago, so Bush made him a recess appointment in 2005. He resigned in 2006 when that appointment ended.

But Bolton has been loyal to Trump, and is seen as a tough but steady voice on foreign policy.

Treasury
The Department of Treasury is key to financial policy. Having an experienced leader in this critical position will be crucial for Trump to deliver on his pledge of a better economy for ordinary Americans.

Politico reports Trump is considering his campaign finance chief, Steven Mnuchin, a 17-year veteran of Goldman Sachs who now works as the chairman and chief executive of the private investment firm Dune Capital Management. Mnuchin is also a Hollywood insider who produced “Sully” and “The Accountant.”

CNBC reported Thursday top Trump aides are looking at Wall Street boss Jamie Dimon for the position. Dimon successfully navigated JPMorgan Chase through the 2008 sub-prime mortgage crisis — the investment bank was far better insulated from the crisis than its competitors and reports even indicated it was reluctant to accept TARP funds from the government. Dimon could be the token Democrat in a Trump Cabinet. His political contributions have largely gone to politicians in the Democratic Party.

A dark horse is longtime Trump supporter Carl Icahn, the billionaire investor. Icahn is 80, and may not want the job. He is also still very much active in his business, buying up stocks as they plunged on election night. He has likely already made a profit as stocks rise again.

Commerce
The Commerce Department is among the least high-profile posts in the Cabinet, but it plays a vital policy role. Rumored picks could be Larry Kudlow of CNBC, a fiscal policy wonk who advised President Reagan.

Linda McMahon, a two-time Republican Senate candidate in Connecticut and founder of WWE, could also be picked. McMahon and her husband Vince McMahon built WWE from a concept into a multi-billion-dollar international franchise. Campaign finance reports indicated McMahon lent $7 million to aiding Trump’s campaign effort through his campaign and affiliated super PACs.

Politico reports billionaire investor Wilbur Ross, a Trump economic adviser, is a possibility. Dan DiMicco, former CEO of steelmaker Nucor Corp., is another possibility, it reports.

Or Trump could pick top Republican supporters: former Texas Gov. Rick Perry or former Arkansas Gov. Mike Huckabee.

Department of Homeland Security
The Department of Homeland Security will be crucial as it fights terrorism and handles illegal immigration. A strong leader for Homeland Security is thus essential, as Trump campaigned on fighting domestic terrorism and illegal immigration.

Strong candidates could be Perry, Huckabee, Giuliani, Sessions, or Christie. An outlier pick could be former Arizona Gov. Jan Brewer.

Interior
For Interior, which has control over federal lands, there’s Forrest Lucas of Lucas Oil. That company’s name is on the Indianapolis Colts’ stadium.

Lucas’ name has been floated as a Cabinet pick because he is a Trump supporter and top businessman. Lucas is an avid supporter of animal agriculture, and has tangled with animal rights activists. This will make him a controversial pick.

Security Posts
Retired Army Lt. Gen. Michael Flynn is a top likely pick for a post like national security adviser. Flynn used to head the Defense Intelligence Agency under President Obama but became disenchanted with the White House after he left in 2014.

Flynn has been sharply critical of the Pentagon’s war plans regarding the Islamic State.

He may need a congressional waiver to be defense secretary as he only left his DIA job in 2014, and the law prevents former military officials from becoming leader of the Pentagon too soon. But look for Flynn to have another top role, likely national security adviser to start — or possibly Homeland Security.

White House Aides
Rumors indicate Trump is seriously looking at Reince Priebus, the Republican National Committee chairman who helped Trump engineer unlikely wins in the Badger State, Michigan, and Pennsylvania, to be his White House chief of staff.

Press secretary will be the daily face of the White House to TV cameras and news reporters, and then to the world. No one navigated the media streams better than Kellyanne Conway, Trump’s campaign manager and owner of The Polling Co. Once she took over the rocky campaign in mid-August, things began to change, slowly but surely.

She also helped Trump score impressive victories with working women and blue-collar America.

And Conway was often the campaign person who sat and took brutal shots from a hostile media. She’s been there.

Trump has a lot to consider. He has to pick people who won’t make his administration a source of regular derision and criticism.