Domenico Montanaro

A tumultuous decade in politics saw everything from the presidency and reelection of the first black president to the rise of the Tea Party and the improbable election of Donald Trump as president.

NPR's top political stories of the year ranged from how incoming Speaker Nancy Pelosi would run the House to Robert Mueller's Russia report and the Green New Deal.

Former Vice President Joe Biden was steadier than in past debates; South Bend, Ind., Mayor Pete Buttigieg came under attack; and the candidates defended their least diverse debate stage yet.

The inception of partisanship goes back decades — and, guess what, Republicans and Democrats can't agree on who started it.

Despite weeks of public hearings, views on impeachment haven't budged, according to the latest NPR/PBS NewsHour/Marist Poll. "It's like the hearings have never happened," pollster Lee Miringoff said.

A new NPR/PBS NewsHour/Marist poll finds: American views of impeachment are divided and unchanged. Also, ex-Vice President Joe Biden and Sen. Bernie Sanders lead the Democratic presidential contest.

Democrats and Democratic-leaning independents say they prefer former Vice President Joe Biden and Vermont Sen. Bernie Sanders over the rest of the Democratic field just ahead of Sen. Elizabeth Warren.

President Trump and Republican supporters have dismissed the articles of impeachment brought before the president, but how do their arguments stack up?

Chairman Jerry Nadler unexpectedly called a halt for the night without consulting minority Republicans after hours of procedural combat toward the expected votes. GOP members were outraged.

The House Judiciary had attorneys for both parties present on the findings of the inquiry as it works to draft articles of impeachment. Republicans called the impeachment process a partisan "show."

Democrats are going forward with impeachment against President Trump. During a hearing this week, they tipped their hand about the three articles they might bring forward.

We look at what we learned from four constitutional law scholars who testified about impeachment Wednesday. Also, we look at how Ukrainians are responding to the impeachment hearings.

The practice doesn't go back as far as you might think and has been sustained by a special interest group — the turkey lobby.

After a slow start to the fifth Democratic presidential debate, the surging Pete Buttigieg parried attacks on race and his level of experience.

Democrats will debate Wednesday night in the midst of an impeachment inquiry, and with a field in flux after Pete Buttigieg's recent surge.

The poll shows just how locked in most Americans are in their partisan positions, even as nearly a dozen people have either testified or are set to testify in the impeachment inquiry.

Impeachment is clearly shaping up to be a partisan affair, and there was a new witness who said he overheard the president inquiring about how the prospect for "investigations" in Ukraine was going.

Acting U.S. Ambassador to Ukraine William Taylor and top State Department official George Kent testified in an open hearing Wednesday, the first of many to come in the impeachment inquiry.

Here are eight things that stood out from the past week's release of closed-door deposition transcripts.

While the White House instructed Chief of Staff Mick Mulvaney not to comply with a subpoena to testify in the impeachment probe, a transcript was released of a top State Department aid's testimony.