What a year this week has been.

Overwhelmed? We cannot blame you, but we are here to help.

If you are looking for an overview of the allegations against President Trump and the status of the House’s impeachment inquiry, you can find that here and here. We will be focusing on the implications for the 2020 election — and, as always, some campaign news you may have missed.

The Democrats are united

For months, Representative Tulsi Gabbard of Hawaii had opposed impeachment proceedings on the grounds that they would further divide the country. As recently as Wednesday, she held firm. But on Friday, she changed her position and joined the other 18 Democratic presidential candidates on board with an impeachment inquiry.

“This inquiry must be swift, thorough and narrowly focused,” she said. “It cannot be turned into a long, protracted partisan circus.”

The candidates are not perfectly aligned — some have been more forceful than others, and some, like Ms. Gabbard, have been careful only to endorse the inquiry Speaker Nancy Pelosi announced on Tuesday, not necessarily impeachment itself.