Since I know and fully understand that impassioned supporters of Bernie Sanders are suffering through a sharp period of disappointment and loss, I want to treat this issue with some sensitivity and make sure to back it up with data. After Tuesday’s losses in Idaho, Michigan, Mississippi and Missouri, FiveThirtyEight gives Bernie Sanders a one percent chance of winning enough delegates to win the nomination outright. They give Joe Biden a 99 percent chance of doing so, and they peg April 28 as the most likely date when this will be official. That’s the day that most of the Mid-Atlantic votes, and Biden is heavily favored in those states. He won’t have to win them, though. He’ll probably cross the delegate threshold no later than that day even if he suffers crushing losses in places like New York, Pennsylvania, and Connecticut. If somehow Biden doesn’t reach the magic number on April 28, he’ll get there shortly thereafter. There will be no contested convention. Short of some unforeseen event, like Biden succumbing to the coronavirus, the outcome of this nomination process is no longer in doubt.

This obviously raises the question of whether or not Sanders should continue running for president. An argument in favor of doing so is that he wants as many delegates at the convention as possible so he can influence the platform and any rules changes that could influence future contests. That’s valid. It’s why I voted for Sanders in 2016 even though the nomination was effectively decided by the time I got to cast my ballot.

But arguing against continuing his campaign is that it’s hard to run against an opponent without criticizing them, and the effect will be to harden his base of supporters against Biden. It will also give Trump ammunition which he will use to his advantage in the general election. The time for vetting Biden is over, and tearing him down based on a one percent chance that Sanders can still prevail just doesn’t compute on any risk/reward chart.

Sanders went home to Vermont on Tuesday night to consider his options, and he decided to stay in the race. His comments on this Wednesday were brief, but instructive:

Sanders said Wednesday that he plans to remain in the Democratic presidential race, even as he acknowledged he is losing the fight to convince voters that he is the most electable candidate against President Trump.

“While we are currently losing the delegate count … poll after poll, including exit poll, show that a strong majority of the American people support our progressive agenda,” Sanders said in brief remarks to reporters in Burlington, Vt.

Sanders also underscored his support among young people, and warned Democrats that the party would need to win their support to be competitive in the future.

In a striking admission of failure, Sanders said that “while our campaign has won the ideological debate, we are losing the debate over electability.” And he previewed a round of questions he said he planned to ask Biden at the debate, including queries challenging his plans on health-care and climate change.

There’s nothing inaccurate about what he said. He’s losing the delegate battle despite exit polls showing that Democrats agree with him on Medicare for All and the importance of climate change. He’s also doing astoundingly better than Biden with young voters who the Democrats will need to turnout in the fall. But it does not follow from this that he should continue his campaign and use the upcoming debate in Arizona to highlight disagreements within the party.

Honestly, I did not expect Sanders to drop out. I did hold out a little hope that he might end his campaign, however, considering the circumstances are a bit different from 2016. The biggest difference is obviously the world is currently suffering from a global pandemic, at the World Health Organization just officially declared this afternoon. As a result, the world economy appears to be slipping into a recession. Another difference is that Barack Obama is not in the White House. Donald Trump is, and he’s tearing down our institutions at a rapid clip. With things this unsettled, one of Biden’s strongest selling points is that he can settle things down and get them under control. It would be nice if he could get some consent for that view from within his own party.

These are powerful reasons why Sanders should abandon his near-hopeless effort to win the nomination and de-prioritize maximizing his influence over the convention. He should probably put more thought into how he can maximize his influence on the left and within the Democratic Party going forward, because every criticism of Biden now is going to be met with increasing panic and hostility from everyone who is focused on beating Trump. Even if Biden wins anyway and easily, there will be lasting ill-will against Sanders that will transfer to his supporters.

There is some theoretical benefit to exposing Biden’s weaknesses now so that they’ll be arbitrated and “old news” in the general election. Biden would also benefit from being forced to organize in the states that are still on the calendar. I don’t think Obama would have ever won Indiana and North Carolina in 2008 if Clinton hadn’t remained in the race and forced him to compete in the primaries there. But there was also lasting enmity for Clinton from Obama supporters that carried over to 2016.

I don’t like telling anyone that they should give up their fight, but I really only see Trump benefiting from Sanders’ decision to stay in the race. It will make it harder for Biden to unite the party, to win over the youth vote and Sanders’ partisans, and it will prevent Biden from assuming the role the world needs from him now, which is a reassuring alternative to Trump who can stop this descent into chaos and catastrophe.

I really wish Bernie would reconsider.