Mara Liasson

Populism has been the biggest force this election year. What lasting effect might populism have on both Democrats and Republicans — even after Bernie Sanders and Donald Trump have left the scene?

Primary voters in New York were very good to the front-runners of both parties. Hillary Clinton and Donald Trump were big winners — helping both in their efforts to clinch their party's nomination.

The presidential candidates await results in the New York primaries. NPR has the latest on what we know so far about the results.

Presidential front-runners Hillary Clinton and Donald Trump are hoping to solidify their leads in New York Tuesday, and an upset in either contest could have dramatic consequences.

Democratic presidential candidates Hillary Clinton and Bernie Sanders squared off in New York Thursday night — ahead of that state's crucial primary on Tuesday. They exchanged sharp attacks.

Consternation is growing among Republicans over Donald Trump's presidential campaign. The prospect of Trump as the Republican presidential nominee has raised many questions about the party's future.

Ted Cruz came away from the Wisconsin primary ahead of his GOP opponents. NPR takes a look at what's to come for the Republican presidential race.

The senator's win puts another speed bump in the way of front-runner Donald Trump. Bernie Sanders leads in early returns for the Democratic primary.

The front-runners in the GOP and Democratic presidential races are looking to shore up their status in Tuesday's Wisconsin primaries.

Both Republican and Democratic primaries are being held in Wisconsin on Tuesday. Donald Trump and Hillary Clinton face different kinds of challenges in the state to maintain their leads.

Bernie Sanders and Ted Cruz both drew victories on Western Tuesday. Hillary Clinton and Donald Trump's wins in Arizona may likely mean their overall delegate lead won't winnow much.

Donald Trump huddled with several Republican luminaries at a private meeting in Washington, D.C., on Monday and held a press conference at the hotel he is renovating on Pennsylvania Avenue.

Trump says the new voters he's turning out can put Midwestern swing states in play. But it's a gamble whether he could win over enough white voters for every minority voter he drives the other way.

Donald Trump has a clear if not guaranteed path to the GOP nomination, but could he win the White House? NPR explains what would have to happen in the battle for electoral college votes for him to succeed.

The front-runners in the Republican and Democratic presidential races each had a good night after Tuesday's slate of primaries. But primary season is not over yet.

Republican Donald Trump won big again last night, but Marco Rubio dropped out after losing Florida. John Kasich stayed alive by winning Ohio. On the Democratic side, Hillary Clinton held onto Ohio.

The NPR politics team brings us analysis on the vote in the Ohio and North Carolina primary contests. Polls are also closing in Florida, Missouri and Illinois.

Voters in five large states — Florida, North Carolina, Ohio, Illinois and Missouri — have their turn in the Republican and Democratic presidential primary contests Tuesday.

The four remaining candidates held their 12th debate of the primary season in Miami Thursday. It was their last debate before the big states of Ohio, Illinois, Missouri and Florida vote next Tuesday.

The Republican presidential candidates debate on Thursday night in Miami ahead of primary elections in five big states.