His aides point out that Murphy has been speaking out on foreign policy for years, and that he’s simply passionate about the issue. Still, his frenzy of activity in recent months has not gone unnoticed by people in and around the Biden campaign.

Then there are Bidenworld insiders who need no promotional campaign: Susan Rice, the hard-charging former national security adviser who was in the mix to serve as Biden’s vice president and is widely assumed to be a lock for a top administration job; and Antony Blinken, the smooth-talking former deputy secretary of State who is now a top Biden campaign aide.

In discussions with various foreign policy observers, POLITICO has heard around 10 names overall, from Foreign Service luminaries such as William Burns to way-outside-the-box picks like Republican Sen. Mitt Romney of Utah.

Biden himself has offered few clues into his thinking, though his long history as a foreign policy specialist — and his campaign comments on the subject — suggests he would make diplomacy a priority. The former vice president also tends to surround himself with a small coterie of trusted advisers, from family members like his sister Valerie to longtime aides like Mike Donilon and Steve Ricchetti — suggesting he’s unlikely to tap an outsider.

“The president is going to want to pick somebody who obviously is qualified, but also can have a close working relationship with him," said Richard Fontaine, chief executive officer of the Center for a New American Security. “Secretaries of State are always more effective when they’re close to the president.”

Aside from his personal comfort level, Biden also has to consider other factors, including: Who would face challenges being confirmed by the Senate? Who will constituencies like progressives want for the job? And what about the promises he’s made to have a diverse Cabinet?

The GOP whisperer

Of the potential candidates for the job, Coons, who now holds the Senate seat once held by Biden, comes closest to openly admitting he wants it.

“Joe Biden and I have very similar, closely aligned views on foreign policy,” he said in a statement. “He’s got a lot of great folks from whom to choose, but if he were to consider me as well, I’d certainly be honored.”

In his messaging so far, Coons has cast himself as a bipartisan dealmaker in Biden’s mold — someone willing to reach across the proverbial aisle to craft a foreign policy that appeals to Republicans and Democrats alike.

“For the United States to play a steady, stabilizing role in world affairs, its allies and adversaries must know that its government speaks with one voice and that its policies won’t shift dramatically with changing domestic political winds,” Coons argued in an Oct. 7 essay in Foreign Affairs, titled “A Bipartisan Foreign Policy is Still Possible.”

The informal document Coons’ supporters have put together notes, among other things, his service on the Senate Foreign Relations Committee and his interest in African affairs. It also points out that Coons has good relationships with Republicans, suggesting that he’ll have
a relatively easy time getting Senate approval.

The left’s man

Murphy, meanwhile, has aligned himself with the increasingly outspoken progressive wing of the Democratic Party.

Progressives are not only intent on ousting Trump, they want to influence Biden’s personnel choices, knowing that can shape his policy. Their vision — which calls for a reduction in military spending, more emphasis on diplomacy and putting economic issues more at the center of foreign policy — appears to have influenced Biden’s foreign policy platform.

Murphy has raised his profile in recent years, using his perch on the Senate Foreign Relations Committee to call for a fresh approach to the foreign affairs budget and draw attention to conflicts in places like Yemen.

He has appeared in a variety of foreign policy forums throughout the 2020 campaign, a guest of groups like the Council on Foreign Relations. He drew ire from Trump for meeting with Iran’s foreign minister earlier this year, a session he defended by saying, “It’s dangerous to not talk to your enemies.” Murphy also is the driving force behind legislation — rejected by Trump — that restricts U.S. arms sales to Saudi Arabia, which, like Iran, is involved in the Yemen war.

A year ago, Murphy published an essay titled “How to Make a Progressive Foreign Policy Actually Work.” It was something of a call for humility and pragmatism on both sides of the burgeoning debate between progressives and establishment Democrats over foreign policy. Its impact on the debate itself has been limited, but it helped fan questions about Murphy’s intentions.

“Progressives should rethink their reflexive opposition to international trade agreements,” Murphy argues in one section. “Yes, a progressive president should fight for greater worker and environmental standards in trade agreements like [the Trans Pacific Partnership], but it would be foolish to simply cede economic hegemony in Asia to China by refusing to try to reconstruct a U.S.-Asia trade agreement.”

Murphy’s activities have drawn attention among Biden hands, but the senator’s aides downplay the idea that he’s auditioning for Foggy Bottom. They point out that he’s been talking about foreign policy for years — he co-authored a Foreign Affairs essay back in 2015 titled “Principles for a Progressive Foreign Policy.”

“He is honored to serve the people of Connecticut in the United States Senate, and there’s a lot to be done in his current job to reassert Congress’ role in foreign policy,” said Jamie Geller, a Murphy spokesperson. “He will continue to work to ensure that U.S. national security is informed and guided by progressive values at home and abroad.”

The trusted hand

If Biden wins, the coronavirus pandemic and resulting economic devastation is likely to consume his early months. Current and former U.S. officials say that could lead him to choose a secretary of State with past experience at the State Department because the person wouldn’t need much on-the-job-training in Foggy Bottom.

That makes Rice — an experienced foreign policy hand who’s held jobs all the way from junior NSC staffer to top Africa diplomat to U.N. ambassador to national security adviser — an appealing option for secretary of State.

She and Biden are said to have a warm relationship, though they disagreed over how to deal with tumult in places like Egypt and Libya when Biden was vice president. As a measure of his esteem, Biden seriously considered Rice as a potential running mate but went instead with California Sen. Kamala Harris. Rice, who is Black, also is one of the few women and people of color being mentioned as a potential chief U.S. diplomat.

Getting Rice confirmed as secretary of State could be difficult. Republicans long ago cast her as a villain, alleging she misled the public about the 2012 Benghazi attacks that killed a U.S. ambassador and three other Americans in Libya. Rice has pointed out that she was simply sharing talking points prepared by intelligence officials, but Republicans have repeatedly dismissed her defenses.

The political assaults were believed to be why her young daughter temporarily complained of having hallucinations, Rice wrote in a memoir published last year. The attacks prompted Rice to take herself out of the running to be Obama’s second-term secretary of State, becoming national security adviser instead.

More recently, Trump and his allies have alleged that Rice was part of a broader conspiracy to undermine the president. They claim she acted improperly when she requested the identities of some Americans referenced in intelligence reports who turned out to be Trump associates. Rice insists she did nothing wrong and came across the names as part of her routine duties as national security adviser; a Justice Department probe into the so-called unmasking of Trump aides quietly wrapped up in recent weeks with no charges filed and no public report.

Rice declined to comment for this story via a spokesperson. Although she’s active on Twitter, appears on television as a Biden surrogate and writes columns for The New York Times, she’s not openly saying she wants the role of chief diplomat — but she’s not deflecting the idea, either.

The Biden insider

Rice’s top rival could be Blinken, 58, a longtime Biden aide and a key member of his 2020 campaign team.

Blinken declined to comment for this article, but he was practically bred for the job: He's a polished Harvard graduate whose father, Donald, also a Harvard graduate, was an investment banker who served as a U.S. ambassador to Hungary. The younger Blinken attended high school in Paris, has worked as a journalist and as a lawyer, and has held positions in the Clinton and Obama administrations. He’s also spent time on Capitol Hill, where he was Democratic staff director for the Senate Foreign Relations Committee when Biden was chair.

Blinken has been a key intermediary for Biden throughout the campaign; he meets on a regular basis, for instance, with a handful of progressive groups trying to shape Biden’s foreign policy.

During the Obama years, Blinken served as deputy national security adviser and deputy secretary of State. But while Blinken would be fluent in State Department matters, foreign policy doyens expect Biden will want him close by in the White House, possibly as national security adviser.