President Trump is not yet 100 days into his presidency, but you can already hear the voices of voters in the commonwealth clamoring to know who will be the Democratic nominee in 2020 to confine this administration to one term.

There is only one candidate who can win 270 votes in the Electoral College — Michelle Obama.

Given her refusal to date to even consider a run, and having seen firsthand how brutal, aging, and exceedingly frustrating the presidency can be, it will take a lot of convincing on the part of her supporters.

Here goes my attempt:

In 1783 then Gen. George Washington managed to prevent a rebellion of army officers that became known as the Newburgh Conspiracy with these words: “Gentlemen, you must pardon me. I have grown old in the service of my country and now find that I am growing blind.”

Yes, service to our nation is not bound by terms, nor aging, but is never-ending, from the moment we say yes to be the bearers of her treasures — our Constitution, our rights, and our institutions.

Patriotism and poetry aside, the only question that matters is: Who can unite the Democratic Party and defeat Donald Trump in 2020?

• Hillary Clinton? Despite her popular vote victory, the nation needs to move on from the conspiracy-minded, egotistical, distrustful world of Clintonland. Besides wouldn’t it be more fun if she continued to toy with a possible run to oust New York Mayor Bill de Blasio?

• New York Gov. Andrew Cuomo? Moreland Commission — need I write more? I can already see the first Trump tweet: “Should have kept Preet on as U.S. attorney to get Corrupt Cuomo thrown in jail #wherehebelongs!”

• U.S. Sen. Bernie Sanders? Will he even be a member of the Democratic Party in 2020? Or even more important, will he be able to pass one piece of legislation in the U.S. Senate to get people back to work in Vermont, West Virginia, or wherever else his MSNBC tour takes him to engage with voters.

• U.S. Sen. Elizabeth Warren? See paragraph on Bernie.

When a nation leaps toward crisis, there is always an opening for a worthy citizen to present herself to the nation as a candidate for the presidency. That person is Michelle Obama.

We know that she does not want to run. We know that the campaign would be grueling. We know that she may even fail. But like Washington Michelle Obama could be that citizen who said yes. There is no other choice than for the most capable and authentic person to run for president. And who better to throw the final stone at that ultimate glass ceiling?

Steven Crimaldi is a senior program manager for global health research projects at an area university. “As You Were Saying” is a regular Herald feature. We invite readers to submit guest columns of no more than 600 words. Email to oped@bostonherald.com. Columns are subject to editing and become Herald property.