Another group under a microscope are people who voted in 2012 but did not bother last November. Such drop-off voters described themselves as surprised by the outcome of the election and “extremely unhappy” about the results, the memo says.

The good news for Democrats: Both groups are leery of tax and social welfare policies that favor the wealthy over the struggling middle class.

The bad news: Reaching them won’t be easy. They get their information from their own sources like Facebook, Twitter, Reddit and other online outlets that are notoriously wrong.

A gift to capture Trump’s heart

Canada’s prime minister, Justin Trudeau, was born into politics, the son of another Canadian leader, Pierre Trudeau.

So when he came to the White House to break the ice with President Trump, he knew just the gift to warm the new president’s heart: a picture of himself.

Image This picture was presented to President Trump by Prime Minister Justin Trudeau of Canada. It shows Mr. Trump honoring Mr. Trudeau’s father, Pierre, at a dinner in New York City in 1981. Credit... White House Pool

“He gave me a picture of myself and your father, and what a great picture. I will keep that in a very special place,” Mr. Trump said, meaning, presumably, a picture of “his father.”

Democrats note Icahn’s potential conflicts of interest in regulatory role

Last year, the billionaire investor Carl C. Icahn waged an all-out battle with the Environmental Protection Agency, complaining that regulations were strangling the oil industry. Now, as Mr. Trump’s special adviser on overhauling regulation, Mr. Icahn has the ear of the president and a front-row seat as the administration rewrites regulation.