This week brings news that the Biden clan has signed off on another campaign. The Delaware News Journal reports:

With the tone, verve and rhetoric of a presidential candidate, Joe Biden led a discussion at the University of Delaware on Tuesday touching on themes of political divisiveness, a struggling middle class and “demagogues” sparking fear of the unknown.

The former vice president then addressed what many among the Delaware audience had thought – or hoped– he might: His presidential ambitions.

Biden said he has not yet decided whether to run for president, though he is close.

He revealed in detail how his family has expressed their backing of a potential presidential run, but he must decide “whether or not I am comfortable taking the family through a very, very, very difficult campaign.”

Campaigns can become especially difficult when candidates adopt unpopular positions. Yesterday this column noted that among the co-sponsors of the Green New Deal are all of the Senate’s declared candidates for the 2020 Democratic presidential nomination. Endorsing the plan to socialize and reorganize much of the U.S. economy at a cost that by one estimate could approach $100 trillion in the first decade are Sens. Cory Booker (D., N.J.), Kirsten Gillibrand (D., N.Y.), Kamala Harris (D., Calif.), Amy Klobuchar (D., Minn.) and Elizabeth Warren (D., Mass.), as well as Vermont socialist Sen. Bernie Sanders.

Liberal Wall Streeters aren’t the only Democrats who might want a candidate willing to challenge this plan. But it’s not clear how strong a dissent Mr. Biden might offer. The legislative text of the Green New Deal asserts that “climate change constitutes a direct threat to the national security of the United States.” At a campaign rally in Florida last fall, Mr. Biden warned of rising sea waters and extreme weather events. He then claimed that at the start of the Obama administration he’d been told by the joint chiefs of staff at the Pentagon that global warming was in fact the biggest security threat.

This week also highlights an opportunity for Mr. Biden to pursue a less radical course than his potential Democratic competitors on another issue. The Journal’s Joshua Jamerson noted on Monday:

Republican-written legislation that would force health-care practitioners to provide medical care to infants deemed alive after abortion procedures fell short of the votes needed to advance in the Senate, failing to overcome Democratic opposition.

The bill was backed by 53 senators, with 44 opposed, but needed 60 votes to clear a procedural hurdle and advance to final passage. Three Democrats voted to support the bill, and three GOP senators didn’t vote.

The same group of presidential candidates who have co-sponsored the green reorganization of the U.S. economy is also now on record for preserving choices for adults even after a child is no longer part of anyone else’s body. Sens. Booker, Gillibrand, Harris, Klobuchar, Warren and Sanders all voted this week against requiring medical care for infants who survive the procedure.

It might be hard to tell from some media coverage of the issue, but such a position is bound to be highly controversial among Democratic voters. Recently Gallup noted that abortion is among the “key areas of intra-Democratic friction.”

Gallup notes that the percentage of Democrats who consider themselves “liberal” has been rising, but that about half of Democrats still call themselves “moderate” or “conservative.” Among these self-described moderate and conservative Democrats, most still think there should be some restrictions on abortion. And even among those Democrats who consider themselves liberal, a significant minority don’t think abortion should be legal in all circumstances.

Here again it’s difficult to tell where Mr. Biden will position himself if he opts to run this year, having moved leftward on abortion issues over the years. But there’s a lot of space between the Democratic senators who are running for President and moderation.

***

Bottom Stories of the day will return tomorrow.

***

Follow James Freeman on Twitter.

Subscribe to the Best of the Web email with one click.

To suggest items, please email best@wsj.com.

(Teresa Vozzo helps compile Best of the Web. Thanks to Chip Dickson.)

***

Mr. Freeman is the co-author of “Borrowed Time,” now available from HarperBusiness.